Lewis & Short

ex-culco, āvi, ātum, 1 [calco], to tread or beat out (very rare; not in Cic.).

  1. I. Lit.: ex dominis meis pugnis furfures, Plaut. Capt. 4, 2, 30.
  2. * II. Transf., to tread down, to stamp firm or close: singuli ab infimo solo pedes terra exculcabantur, rammed down, Caes. B. G. 7, 73, 7 Oud.
    Hence, * exculcātus, a, um, P. a. (trodden out, worn out by treading; trop.), worn out: verba nimis obsoleta exculcataque, Gell. 11, 7, 1.