enculer

to bugger, to sodomize (have anal sex); to fuck (have sex); to fuck, to con (defraud); to beat up

“Et dès que la Desgranges a eu fini, on a fait paraître d'abord Fanny, on lui a coupé les doigts qui lui restent aux mains et aux pieds, et elle a été enculée sans pommade par Curval, le duc et les quatre premiers fouteurs.” — As soon as la Desgranges had finished, Fanny was brought in, her remaining fingers and toes were cut off, and she was buggered dry by Curval, the duke and the first four fuckers.

From en- + cul + -er.