5 entries found for beam.
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Main Entry: 1beam
Pronunciation: bm
Function: noun 1: a long heavy piece of timber or metal used especially as a main horizontal support of a building or ship 2: the bar of a balance from which scales hang 3: the width of a ship at its widest part 4 a: a ray of light b: a collection of nearly parallel rays (as X-rays) or a stream of particles (as electrons) 5: a constant radio signal sent out to guide pilots along a course