tv. to get some sunshine; to tan in the sun. : We wanted to catch some rays, but the sun never came out the whole time we were there. , I want to get out on that beach and bag some rays.
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw Hill.
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Idioms & Phrases
catch some rays
Sunbathe, as in I want a good tan so I think I'll go catch some rays. [Slang; second half of 1900s]