fel·la·tio \fəˈlāshēˌō, feˈ-, -läd.ē-\noun alsofel·la·tion\-lāshən\ (-s) Etymology: New Latin fellation-, fellatio, from Latin fellatus, felatus (past participle of fellare, felare to suck) + -ion-, -io -ion — more at feminine : the practice of obtaining sexual satisfaction by oral stimulation of the penis