oc-căno (obc-), ui, 3, v. n., milit.,
to blow. sound a wind instrument (very rare; not in Cic. or Caes.): cornicines occanuere, Sall. Fragm. ap. Diom. p. 370 P. (Hist. 1, 71): tum Sentius occanere cornua jussit, Tac. A. 2, 81; v. occino.
occanō uī, ere ob+cano, to blow into, play upon : cornua tubasque, Ta. ...
An Elementary Latin Dictionary