1

jam

play
noun \ˈjam\

Definition of jam

  1. :  a food made by boiling fruit and sugar to a thick consistency

jammy

play \ˈja-mē\ adjective

Examples of jam in a Sentence

  1. Thousands of people jammed into the hall.

  2. People were jamming the exits after the concert.

  3. He jammed the book back into the bookcase.

  4. She jammed her foot down hard on the brakes.

  5. She jammed on the brakes.

  6. A piece of paper jammed the copy machine.

Origin and Etymology of jam

probably from 2jam


2

jam

verb

Definition of jam

jammed

;

jamming

  1. intransitive verb
  2. 1a :  to become blocked, wedged, or stuck fast The line jammed and the boat hung useless.b :  to become unworkable when a movable part becomes blocked or stuck the gun jammed

  3. 2 :  to force one's way into a restricted space People continued to jam into the already crowded hall.

  4. 3 :  to improvise on a musical instrument with a group :  to take part in a jam session musicians jamming together

  5. 4 basketball :  dunk 2

  6. transitive verb
  7. 1a :  to press into a close or tight position jammed his hat onb (1) :  to cause to become wedged or stuck so as to be unworkable jam the typewriter keys (2) :  to make (machinery) unworkable by becoming wedged or stuck The paper jammed the printer.c :  to block passage of :  obstruct traffic jammed by an accidentd :  to fill often to excess :  pack the crowd jammed the theater

  8. 2 :  to push forcibly jammed the shovel into the ground; especially :  to apply (brakes) suddenly and forcibly —used with on suddenly jammed on the brakes

  9. 3 :  to cause (a part of the body) to be painfully crushed or squeezed jammed his finger in the door

  10. 4a :  to make unintelligible by sending out interfering signals or messages jam a radio broadcastb :  to make (a radar apparatus) ineffective by sending out interfering signals or by causing reflection of radar waves trying to jam the enemy's radar

  11. 5 football :  to block, crowd, or bump (a pass receiver) near the line of scrimmage The receiver got jammed at the line.

  12. 6 baseball :  to pitch inside to (a batter) jammed him with a fastball

jammer

play \ˈja-mər\ noun

Origin and Etymology of jam

origin unknown


3

jam

noun

Definition of jam

  1. 1a :  a crowded mass that impedes or blocks movement a traffic jamb :  an act or instance of becoming blocked or jammed (see 2jam) paper causing a jam of the copier

  2. 2a :  the quality or state of being blocked, stopped, or jammed the jam of the legislature caused by the piling up of new bills in the final daysb :  the pressure or congestion of a crowd :  crush a jam of people

  3. 3 :  a difficult situation or state of affairs :  fix got into a jam

  4. 4 :  jam session

  5. 5 basketball :  dunk shot

  6. 6 slang :  a musical piece

Origin and Etymology of jam

see 2jam


Jam

abbreviation

Definition of Jam

  1. Jamaica



JAM Defined for English Language Learners

jam

play
verb

Definition of jam for English Language Learners

  • : to fill (a place) completely

  • : to fill (something, such as a door or a road) so that movement is slow or stopped

  • : to press or push (an object) into a tight place


JAM Defined for Kids

1

jam

play
verb \ˈjam\

Definition of jam for Students

jammed

;

jamming

  1. 1 :  to crowd, squeeze, or wedge into a tight position Fans jammed the auditorium.

  2. 2 :  to put into action hard or suddenly He jammed his hands into his pockets. She jammed on the brakes.

  3. 3 :  to hurt by pressure I jammed a finger in the car door.

  4. 4 :  to be or cause to be stuck or unable to work because a part is wedged tight Paper jammed the copier.

  5. 5 :  to cause interference in (radio or television signals)


2

jam

play
noun

Definition of jam for Students

  1. :  a food made by boiling fruit with sugar until it is thick


3

jam

play
noun

Definition of jam for Students

  1. 1 :  a crowded mass of people or things that blocks something a traffic jam

  2. 2 :  a difficult situation I got myself into a jam.



Seen and Heard

What made you want to look up jam? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a severe test

Get Word of the Day daily email!

Test Your Vocabulary

The Emoji Quiz

  • emoji-the-quiz
  • What phase of the moon is this: 🌖 ?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!