hamstring

v. cut the hamstring or hamstrings; cripple, disable

n. knee tendon (Anatomy)

In human anatomy, a hamstring refers to one of the tendons that makes up the borders of the space behind the knee. In modern anatomical contexts, however, they usually refer to the tendons of the semitendinosus, the semimembranosus, and the biceps femoris. In quadrupeds, it refers to the single large tendon found behind the knee or comparable area.
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Hamstring /ham·string/ one of the tendons bounding the popliteal space laterally and medially. inner hamstring the tendons of gracilis, sartorius, [more]Hamstring - Community and Resources

Noun
1. one of the tendons at the back of the knee
(synonym) hamstring tendon
(hypernym) tendon, sinew
Verb
1. make ineffective or powerless; "The teachers were hamstrung by the overly rigid schedules"
(hypernym) torment, rag, bedevil, crucify, dun, frustrate
2. cripple by cutting the hamstring
(hypernym) cripple, lame
(derivation) hamstring tendon

hamstring, knee tendon (Anatomy)