LAT

Lewis Short

subsessa (noun F) : subsido
* An ambush, ambuscade (post-class.): subsessas occultius collocare,Veg. Mil. 3, 6 med.: in subsessā esse,id. ib. 3, 22; cf.: hostium dolos subsessas vocamus,Serv. Verg. A. 11, 268.
Charlton T. Lewis, Charles Short, A Latin Dictionary
memory