occulco (obc-), āvi, ātum, 1, v. a. [obcalco].
to tread or trample down (mostly ante-class.): bene occulcato, Cato R. R. 49, 2: (cohors) occulcata pedibus, Varr. R. R. 1, 13, 4; Liv. 27, 14, 7 Drak. N. cr.
occulcō —, ātus, āre ob+calco, to tread down, trample : partim occulcatis, L. ...
An Elementary Latin Dictionary