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definition of the word beam

by the Wiktionnary

Middle English beem, Old English bēam, originally meaning "tree," cognate with Dutch boom, German Baum, Old High German boum "tree"

Singular
beam

Plural
beams

beam (plural beams)

  1. Any large piece of timber or iron long in proportion to its thickness, and prepared for use.
  2. One of the principal horizontal timbers of a building; one of the transverse members of a ship's frame on which the decks are laid - supported at the sides by knees in wooden ships and by stringers in steel ones.
  3. (nautical) The maximum width of a vessel; as, one vessel is said to have more beam than another; also called breadth. (FM 55-501).
  4. The crossbar of a mechanical balance, from the ends of which the scales are suspended.
  5. The principal stem of the antler of a deer.
  6. The pole of a carriage.
  7. A cylinder of wood, making part of a loom, on which weavers wind the warp before weaving; also, the cylinder on which the cloth is rolled, as it is woven; one being called the fore beam, the other the back beam.
  8. The straight part or shank of an anchor.
  9. The central bar of a plow, to which the handles and colter are secured, and to the end of which are attached the oxen or horses that draw it.
  10. A heavy iron lever having an oscillating motion on a central axis, one end of which is connected with the piston rod from which it receives motion, and the other with the crank of the wheel shaft; -- called also working beam or walking beam.
  11. A ray or collection of parallel rays emitted from the sun or other luminous body; as, a beam of light, or of heat.
  12. (figuratively) A ray; a gleam; as, a beam of comfort.
  13. One of the long feathers in the wing of a hawk; -- called also beam feather.
  14. (music) A horizontal bar which connects the stems of two or more notes to group them and to indicate metric value.


Definition from Wiktionary
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