Crutch

Webster's Dictionary

(1): (v. t.) To support on crutches; to prop up.

(2): (n.) A forked stanchion or post; a crotch. See Crotch.

(3): (n.) A staff with a crosspiece at the head, to be placed under the arm or shoulder, to support the lame or infirm in walking.

(4): (n.) A knee, or piece of knee timber

(5): (n.) A form of pommel for a woman's saddle, consisting of a forked rest to hold the leg of the rider.