Lewis Short
pissŏcēros (noun M) = πισσόκηρος:
* Pitch-wax, work of pitch and wax, the second foundation of the honey-comb: prima fundamenta commosin vocant periti, secunda pissoceron, tertia propolin,Plin. 11, 7, 6, § 16.
Charlton T. Lewis, Charles Short, A Latin Dictionary