Lewis & Short

1. căpĭto, ōnis, m. amplif. [caput], one that has a large head, big-headed.

  1. I. Lit., Cic. N. D. 1, 29, 80.
  2. II. Transf.
    1. A. A sea-fish with a large head, called also cephalus, Cato, R. R. 158, 1.
    2. B. A kind of fish with a large head: Cyprinus dobula, Linn.; Aus. Mos. 85.