trophothylax
noun
troph·o·thy·lax
-ˈthīˌlaks
plural -es
: a depression or pocket on the underside of the body behind the mouth in various ant larvae in which food is placed by the attendant worker ants
Word History
Etymology
New Latin, from troph- + Greek thylax pouch, sack
First Known Use
1920, in the meaning defined above