/ Dictionary / Index S Sheerness: Meaning and Definition of Find definitions for: Sheer•ness Pronunciation: (shēr'nis), [key] — n. a seaport in N Kent, in SE England on the Isle of Sheppey, at the mouth of the Thames: government dockyards. 31,541. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sheerlegs sheer plan 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