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noun, often attributive \ˈbläk\

Simple Definition of block

  • : a solid piece of material (such as rock or wood) that has flat sides and is usually square or rectangular in shape

  • : an area of land surrounded by four streets in a city

  • : the length of one city block

Source: Merriam-Webster's Learner's Dictionary

Full Definition of block

  1. 1 :  a compact usually solid piece of substantial material especially when worked or altered to serve a particular purpose: as a :  the piece of wood on which the neck of a person condemned to be beheaded is laid for execution b :  a mold or form on which articles are shaped or displayed c :  a hollow rectangular building unit usually of artificial material d :  a lightweight usually cubical and solid wooden or plastic building toy that is usually provided in sets e :  the casting that contains the cylinders of an internal combustion engine f :  starting block

  2. 2 a :  obstacle b :  an obstruction of an opponent's play in sports; especially :  a halting or impeding of the progress or movement of an opponent in football by use of the body c (1) :  interruption of normal physiological function (as of a tissue or organ); especially :  heart block (2) :  local anesthesia (as by injection) produced by interruption of the flow of impulses along a nerve d :  interruption or cessation especially of train of thought by competing thoughts or psychological suppression — compare writer's block

  3. 3 slang :  head 1 <threatened to knock his block off>

  4. 4 :  a wooden or metal case enclosing one or more pulleys and having a hook, eye, or strap by which it may be attached

  5. 5 :  a piece of material (as wood or linoleum) having on its surface a hand-cut design from which impressions are to be printed

  6. 6 a (1) :  a usually rectangular space (as in a city) enclosed by streets and occupied by or intended for buildings (2) :  the distance along one of the sides of such a block b (1) :  a large building divided into separate functional units (2) :  a line of row houses (3) :  a distinctive part of a building or integrated group of buildings

  7. 7 :  a platform from which property is sold at auction

  8. 8 a :  a quantity, number, or section of things dealt with as a unit b :  bloc 2

on the block

  1. :  for sale

Examples of block in a sentence

  1. a wall built out of concrete blocks

  2. We took a walk around the block.

  3. She lived on our block.

  4. The store is three blocks down on the right.

  5. Our hotel is a block from the ocean.

Origin and Etymology of block

Middle English blok, from Middle French & Middle Dutch; Middle French bloc, from Middle Dutch blok; akin to Old High German bloh block

First Known Use: 14th century

Other Automotive Terms




Simple Definition of block

  • : to be placed in front of (something, such as a road or path) so that people or things cannot pass through

  • : to place something in front of (something, such as a road) so that people or things cannot go into the area

  • : to stop (someone or something) from moving through or going by

Source: Merriam-Webster's Learner's Dictionary

Full Definition of block

  1. transitive verb
  2. 1 a :  to make unsuitable for passage or progress by obstruction b archaic :  blockade c :  to hinder the passage, progress, or accomplishment of by or as if by interposing an obstruction d :  to shut off from view e :  to interfere usually legitimately with (as an opponent) in various games or sports f :  to prevent normal functioning or action of g :  to restrict the exchange of (as currency or checks)

  3. 2 :  to mark or indicate the outline or chief lines of <block out a design>

  4. 3 :  to shape on, with, or as if with a block <block a hat>

  5. 4 :  to secure, support, or provide with a block

  6. 5 :  to work out or chart the movements of (as stage performers) —often used with out

  7. 6 :  to make (two or more lines of writing or type) flush at the left or at both left and right

  8. intransitive verb
  9. :  to block an opponent in sports



Examples of block in a sentence

  1. There's an accident blocking the road.

  2. The entrance was blocked by a gate.

  3. Blood clots have completely blocked one of his arteries.

  4. The protesters blocked the road with parked vehicles.

  5. The ambulance was blocked by cars in the road.

  6. An accident was blocking traffic.

  7. Could you move to the left, please. You're blocking my light.

  8. a shield that blocks the wind

  9. Several senators are trying to block the passage of the bill.

  10. His vote blocked the treaty.


First Known Use of block


Synonym Discussion of block

hinder, impede, obstruct, block mean to interfere with the activity or progress of. hinder stresses causing harmful or annoying delay or interference with progress <rain hindered the climb>. impede implies making forward progress difficult by clogging, hampering, or fettering <tight clothing that impedes movement>. obstruct implies interfering with something in motion or in progress by the sometimes intentional placing of obstacles in the way <the view was obstructed by billboards>. block implies complete obstruction to passage or progress <a landslide blocked the road>.


biographical name \ˈbläk\

Definition of Block

  1. Herbert Lawrence 1909–2001 Her*block play \ˈhər-ˌbläk\ Am. editorial cartoonist

BLOCK Defined for Kids



noun \ˈbläk\

Definition of block for Students

  1. 1 :  a solid piece of some material usually with one or more flat sides <a block of ice>

  2. 2 :  an area of land surrounded by four streets in a city

  3. 3 :  the length of one side of a city block

  4. 4 :  a number of things thought of as forming a group or unit <a block of seats>

  5. 5 :  a large building divided into separate houses or shops <an apartment block>

  6. 6 :  an action that stops or slows down an opponent (as in football)

  7. 7 :  something that prevents a person from thinking about certain things <a mental block>

  8. 8 :  something that stops or makes passage or progress difficult :  obstruction

  9. 9 :  a case enclosing one or more pulleys




Definition of block for Students



  1. 1 :  to stop or make passage through or through to difficult :  obstruct <A gate blocked the entrance.>

  2. 2 :  to stop or make the passage of difficult <An accident is blocking traffic.> <Opponents blocked the bill in Congress.>

  3. 3 :  to make an opponent's movement (as in football) difficult

Medical Dictionary



noun , often attributive \ˈbläk\

Medical Definition of block

  1. 1:  interruption of normal physiological function of a tissue or organ <respiratory block due to carbon monoxide>; especially :  heart block

  2. 2a:  block anesthesiab:  nerve block 1

  3. 3:  interruption of a train of thought by competing thoughts or psychological suppression




Medical Definition of block

  1. 1:  to prevent normal functioning of (a bodily element) <block a nerve with novocaine>

  2. 2:  to obstruct the effect of <a carboxyl group blocked by esterification>

  3. intransitive verb

  4. :  to experience or exhibit psychological blocking or blockage


\-ər\play noun

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