trappe

hatch or trap door; trap (mouth)

“Dumont a une grande trappe et est démagogue.” — Dumont has a big trap, and he's a demagogue.

From Middle French trappe, from Old French trape (“trap, snare”), from Old Frankish *trappā (“trap, snare”), from Proto-Germanic *trap-, *tramp- (“to step”), from Proto-Indo-European *dremb- (“to run”). More at English trap.