/ Dictionary / Index L leaf miner: Meaning and Definition of Find definitions for: leaf' min"er Pronunciation: [key] any of the larvae of any of numerous insects, as moths of the family Gracilariidae, that live in and feed on the parenchyma of leaves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. leaf lettuce leaf mold Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language