noun a knee, or piece of knee timber.
2. crutch ·vt to support on crutches; to prop up.
3. crutch ·noun a forked stanchion or post; a crotch. ·see crotch.
4. crutch ·noun a form of pommel for a woman's saddle, consisting of a forked rest to hold the leg of the rider.
5. crutch ·noun a staff with a crosspiece at the head, to be placed under the arm or shoulder, to support the lame or infirm in walking.