/ Dictionary / Index U undertow: Meaning and Definition of Find definitions for: un•der•tow Pronunciation: (un'dur-tō"), [key] — n. the seaward, subsurface flow or draft of water from waves breaking on a beach. any strong current below the surface of a body of water, moving in a direction different from that of the surface current. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: undertow (Thesaurus) undertook undertrick Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language