Conjucation: the way you end or otherwise change verbs depending on their tense and person. I stab, she stabs, we stabbed. I kill, you will kill, they have all been killed. That kind of thing.
"Conjugate the verb" was a common synonym for sex when I was at school, perhaps because it derives from to yoke together or to pull together in Latin. And our Latin teacher was a bit of babe.
