Stifle

grasset

(joint between the femur and tibia in the hind leg of various four-legged mammals, especially horses)

réprimer

(to keep in, hold back, or repress (something))

suffoquer

(to die of suffocation)

étouffer

(to make (an animal or person) unconscious or cause (an animal or person) death by preventing breathing; smother, suffocate)

étouffer

(to prevent (a breath, cough, or cry, or the voice, etc.) from being released from the throat)

étouffer

(to make (something) unable to be heard by blocking it with some medium)