'Hamstrung' definitions:

Definition of 'Hamstrung'

From: GCIDE

Hamstring \Ham"string`\, v. t. [imp. & p. p. Hamstrung; p. pr. & vb. n. Hamstringing. See String.] To lame or disable by cutting the tendons of the ham or knee; to hough; hence, to cripple; to incapacitate; to disable. [1913 Webster]
So have they hamstrung the valor of the subject by seeking to effeminate us all at home. --Milton. [1913 Webster]