hamstring
US /ˈhæm.strɪŋ/
UK /ˈhæm.strɪŋ/

1.
any of five tendons at the back of the human knee, or (in quadrupeds) the great tendon at the back of the hock.
:
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He pulled a hamstring during the sprint.
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The athlete suffered a severe hamstring injury.
1.
to cripple (a person or animal) by severing the hamstrings.
:
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The rebels would often hamstring their captives to prevent escape.
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The ancient practice of hamstringing horses was used to prevent them from being ridden.