/ Dictionary / Index S serin: Meaning and Definition of Find definitions for: ser•in Pronunciation: (ser'in), [key] — n. a small finch, Serinus serinus, of Europe and northern Africa, closely related to the canary. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: serin (Thesaurus) serigraph serine Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language