/ Dictionary / Index L lats: Meaning and Definition of Find definitions for: lats Pronunciation: (lats), [key] — n.pl. Informal. latissimus dorsi muscles. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lats (Thesaurus) -latry latte Related Content Daily Word Quiz: prevalent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language