/ Dictionary / Index S subcasing: Meaning and Definition of Find definitions for: sub•cas•ing Pronunciation: (sub-kā'sing, sub'kā"-), [key] — n. Carpentry. a rough casing for a doorway or window. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. subcartilaginous subcategory Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language