/ Dictionary / Index Z Ziploc: Meaning and Definition of Find definitions for: Zip•loc Pronunciation: (zip'lok"), [key] a brand of plastic bag made with interlocking ridges near the edges, so as to be easily closed or sealed by pressing one side of the opening against the other. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. zip-in zip-out Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language