/ Dictionary / Index S swellfish: Meaning and Definition of Find definitions for: swell•fish Pronunciation: (swel'fish"), [key] — pl. -fish, -fish•es. puffer (def. 2). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. swelled head swell front Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language