Dictionary

1beam

noun \ˈbēm\

: a line of light coming from a source (such as the sun or a headlight)

: a line of energy, particles, etc., that cannot be seen

: a long and heavy piece of wood or metal that is used as a support in a building or ship

Full Definition of BEAM

1
a :  a long piece of heavy often squared timber suitable for use in construction
b :  a wood or metal cylinder in a loom on which the warp is wound
c :  the part of a plow to which handles, standard, and coulter are attached
d :  the bar of a balance from which scales hang
e :  one of the principal horizontal supporting members (as of a building or ship) <a steel beam supporting a floor>; also :  boom, spar <the beam of a crane>
f :  the extreme width of a ship at the widest part
g :  an oscillating lever on a central axis receiving motion at one end from an engine connecting rod and transmitting it at the other
2
a :  a ray or shaft of light
b :  a collection of nearly parallel rays (as X rays) or a stream of particles (as electrons)
c :  a constant directional radio signal transmitted for the guidance of pilots; also :  the course indicated by a radio beam
3
:  the main stem of a deer's antler
4
:  the width of the buttocks
on the beam
1
:  following a guiding beam
2
:  proceeding or operating correctly
ADVERTISEMENT

Examples of BEAM

  1. a bright beam of light
  2. We saw the beams from their flashlights.
  3. the building's steel support beams

Origin of BEAM

Middle English beem, from Old English bēam tree, beam; akin to Old High German boum tree
First Known Use: before 12th century

Related to BEAM

Other Wood Production Terms

cord, lumber, punk

2beam

verb

: to smile happily

: to say (something) while smiling happily

: to send out beams of light or energy

Full Definition of BEAM

transitive verb
1
:  to emit in beams or as a beam
2
:  to support with beams
3
a :  to transmit especially by satellite :  broadcast
b :  to transmit (data) electronically
c :  to direct to a particular audience
intransitive verb
1
:  to send out beams of light
2
:  to smile with joy

Examples of BEAM

  1. She beamed as she told us the good news.
  2. They stood beaming with satisfaction.
  3. We're getting married! he beamed.
  4. The sun beamed its light through the window.
  5. Pictures of the distant planet were beamed back to the Earth.

First Known Use of BEAM

15th century
BEAMING Defined for Kids

1beam

noun \ˈbēm\

Definition of BEAM for Kids

1
:  a long heavy piece of timber or metal used as a main horizontal support of a building or a ship <a ceiling beam>
2
:  a ray of light
3
:  a radio wave sent out from an airport to guide pilots

2beam

verb
beamedbeam·ing

Definition of BEAM for Kids

1
:  to send out beams of light <Sunlight was beaming through the window.>
2
:  to smile with joy <She beamed as she told us the good news.>
3
:  to aim a radio broadcast by use of a special antenna
Medical Dictionary

beam

noun \ˈbēm\

Medical Definition of BEAM

1
:  a ray or shaft of light
2
:  a collection of nearly parallel rays (as X-rays) or a stream of particles (as electrons)

Browse

4 ENTRIES FOUND:
Next Word in the Dictionary: beamagePrevious Word in the Dictionary: BealtineAll Words Near: beam
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears