Meaning of BEAM in English

I. ˈbēm noun

Etymology: Middle English beem, from Old English bēam tree, beam; akin to Old High German boum tree

Date: before 12th century


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


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

II. verb

Date: 15th century

transitive verb

1. : to emit in beams or as a beam

2. : to support with beams


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

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.