/ Dictionary / Index L London plane: Meaning and Definition of Find definitions for: Lon'don plane' Pronunciation: [key] a tall, hardy, widely spreading plane tree, Platanus acerifolia, of North America, having clusters of round, bristly fruit. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. London forces Londres 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