1horsesto hamstring, to disable (a horse) by cutting its tendons:
(
s.xiv1; MS: s.xivm
) Nostre Sire dist a Josue: ‘[...] Tu southnerveras lour chivals et arderas lour curres al feu.’ [...] Il fist sicom Nostre Sire comaunda a luy: il southnerva lour chivaux et ardi lour curres
533 and 539