Lewis & Short

1. calcĭtro, āre, v. n. [1 calx].

  1. I. Lit., to strike with the heels, to kick, of animals (very rare), Plin. 30, 16, 53, § 149; cf. calcitratus.
    1. B. Trop, to resist, to be stubborn or refractory: calcitrat, respuit, * Cic. Cael. 15, 36.
    2. C. Prov.: calcitrare contra stimulum, to kick against the pricks, Amm. 18, 5, 1; Vulg. Act. 9, 5; 26, 14; cf. 1. calx.
  2. * II. In gen., to strike convulsively with the feet, of one dying, Ov M. 12, 240.