GNU Collaborative International Dictionary of English

Found one definition

1.       
   Beamy (), a.
   1. Emitting beams of light; radiant; shining. “Beamy gold.”  Tickell.
   
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   2. Resembling a beam in size and weight; massy.
   
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   His double-biting ax, and beamy spear. Dryden.
   
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   3. Having horns, or antlers.
   
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   Beamy stags in toils engage. Dryden.
   
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