/ Dictionary / Index S socko: Meaning and Definition of Find definitions for: sock•o Pronunciation: (sok'ō), [key] — adj. Slang. extremely impressive or successful: a socko performance. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sock lining sock suspender Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language