Main Entry: pin·worm

Pronunciation: \ˈpin-ˌwərm\

Function: noun

: any of numerous small nematode worms of the family Oxyuridae that have the tail of the female prolonged into a sharp point and infest the intestines and especially the cecum of various vertebrates ; especially : a worm of the genus Enterobius (E. vermicularis) that is parasitic in humans