/ Dictionary / Index L lockage: Meaning and Definition of Find definitions for: lock•age Pronunciation: (lok'ij), [key] — n. the construction, use, or operation of locks, as in a canal or stream. passage through a lock or locks. a toll paid for such passage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: lockage (Thesaurus) lockable lock bay Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language