The Collaborative International Dictionary
Postfurca
Postfurca \Post*fur"ca\, n.; pl. Postfurc[ae]. [NL., fr. post behind + furca a fork.] (Zo["o]l.) One of the internal thoracic processes of the sternum of an insect.
Wiktionary
postfurca
n. (context zoology English) One of the internal thoracic processes of the sternum of an insect.