Entry 3 senses Webster, 1913 Beamy · Beam·y · IPA /ˈbiːmi/ 01 a. Emitting beams of light; radiant; shining. 1. Emitting beams of light; radiant; shining. 2. Resembling a beam in size and weight; massy. “His double-biting ax, and beamy spear.” — Dryden. 3. Having horns, or antlers. “Beamy stags in toils engage.” — Dryden.