definition of
beam

[1] #1 beam n. [radio beam] a signal transmitted along a narrow path; guides airplane pilots in darkness or bad weather. wn

[2] #2 beam n. long thick piece of wood or metal or concrete, etc., used in construction. wn

[3] #3 beam v. smile radiantly; express joy through one's facial expression. wn

[4] #4 beam n. [ray, electron beam] a group of nearly parallel lines of electromagnetic radiation. wn

[5] #5 beam n. [beam of light, light beam, ray, ray of light, shaft, shaft of light, irradiation] a column of light (as from a beacon). wn