Ache \Ache\, v. i. [imp. & p. p. {Ached}; p. pr. & vb. n. {Aching}.] [OE. aken, AS. acan, both strong verbs, AS. acan, imp. [=o]c, p. p. acen, to ache; perh. orig. to drive, and akin to agent.] To suffer pain; to have, or be in, pain, or in continued pain; to be distressed. ``My old bones ache.'' --Shak. The sins that in your conscience ache. --Keble.