/ Dictionary / Index L locker plant: Meaning and Definition of Find definitions for: lock'er plant" Pronunciation: [key] an establishment for storing food under refrigeration, containing lockers for renting to individual users. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Locker-Lampson locker room 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