Kneejointed

a. (Bot.) Geniculate; kneed. See Kneed, a., 2. [ 1913 Webster ]

n. 1. The joint of the knee. [ 1913 Webster ]

2. (Mach.) A toggle joint; -- so called because consisting of two pieces jointed to each other end to end, making an angle like the knee when bent. [ 1913 Webster ]