Caballine \Cab"al*line\ (k[a^]b"al*l[imac]n), a. [L. caballinus, fr. caballus a nag. Cf. {Cavalier}.] Of or pertaining to a horse. -- n. Caballine aloes. {Caballine aloes}, an inferior and impure kind of aloes formerly used in veterinary practice; -- called also {horse aloes}. {Caballine spring}, the fountain of Hippocrene, on Mount Helicon; -- fabled to have been formed by a stroke from the foot of the winged horse Pegasus.