/ Dictionary / Index L lemon grass: Meaning and Definition of Find definitions for: lem'on grass" Pronunciation: [key] any of several lemon-scented grasses of the genus Cymbopogon, esp. C. citratus, of tropical regions, yielding lemon-grass oil. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lemongrass (Thesaurus) lemon geranium lemon-grass oil Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language