Capel \Ca"pel\ (k[=a]"p[e^]l), Caple \Ca"ple\ (-p'l), n. [Icel. kapall; cf. L. caballus.] A horse; a nag. [Obs.] --Chaucer. Holland. Capel \Ca"pel\ (k[=a]"p[e^]l), n. (Mining) A composite stone (quartz, schorl, and hornblende) in the walls of tin and copper lodes.