Lewis & Short

oscŭlātĭo, ōnis, f. [osculor],

  1. I. a kissing (rare but class.), Cic. Cael. 20, 49; Cat. 48, 5.
  2. II. In med. lang.: venarum, the inosculation of blood-vessels, Gr. ὰναστόμωσις, Cael. Aur. Tard. 2, 10, 121 and 123.