/ Dictionary / Index B banana oil: Meaning and Definition of Find definitions for: banan'a oil" Pronunciation: [key] a sweet-smelling liquid ester, CHO, a mixture of isomers derived from amyl alcohol and having the characteristic odor of bananas: used chiefly as a paint solvent and in artificial fruit flavors; amyl acetate. insincere talk; nonsense. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Bananaland banana republic Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language