/ Dictionary / Index S Subroc: Meaning and Definition of Find definitions for: Sub•roc Pronunciation: (sub'rok"), [key] — n. Mil. a rocket that contains a nuclear depth charge and that can be launched underwater from a submarine torpedo tube. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subring subrogate Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language