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Definition of beam:

  1. 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.
  2. 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.
  3. A ray or collection of parallel rays emitted from the sun or other luminous body; as, a beam of light, or of heat.
  4. Any large piece of timber or iron long in proportion to its thickness, and prepared for use.
  5. Fig.: A ray; a gleam; as, a beam of comfort.
  6. One of the long feathers in the wing of a hawk; - called also beam feather.
  7. One of the principal horizontal timbers of a building or ship.
  8. The bar of a balance, from the ends of which the scales are suspended.
  9. The main part 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. The pole of a carriage.
  11. The principal stem or horn of a stag or other deer, which bears the antlers, or branches.
  12. The straight part or shank of an anchor.
  13. The width of a vessel; as, one vessel is said to have more beam than another.
  14. To emit beams of light.
  15. To send forth; to emit; - followed ordinarily by forth; as, to beam forth light.


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