Breadcrumb Home > Dictionary > Index B bats: Meaning and Definition of Find definitions for: bats Pronunciation: (bats), [key] — adj. Slang. insane; crazy: He's gone bats. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bats (Thesaurus) bat ray batsman ✖ Related Content Daily Word Quiz: hortatory Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language