North American. to skin the cat: to pull one's body over a bar by hanging from it by the hands and passing the feet and legs between the arms. Also…

to chin the bar: in gymnastics, to draw up the body until the chin is brought over the horizontal bar; also absol. (reflexive).

intransitive. To perform a kip.

intransitive. To adopt a pike position; (also transitive) to move (a part of the body) so as to adopt a pike position.

Sport. intransitive. Gymnastics. To perform a physical manoeuvre or exercise by exerting pressure with part of the body.

to perform on a trampoline; also figurative.