/ Dictionary / Index A aching: Meaning and Definition of Find definitions for: ach•ing Pronunciation: (?'king), [key] ? adj. causing physical pain or distress: treatment for an aching back. full of or precipitating nostalgia, grief, loneliness, etc. Random House Unabridged Dictionary, Copyright 1997, by Random House, Inc., on Infoplease. See also: aching (Thesaurus) Achinese Achinsk Related Content Daily Word Quiz: ravenous Analogy of the Day: Today?s Analogy Spelling Bee: Today?s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language