Artificial intelligent assistant

horse-lock

ˈhorse-lock Obs.
  A shackle for a horse's feet = fetlock n. 2; hence, app. any hanging lock, a padlock.

1486 Nottingham Rec. III. 255 For a horse lok..vjd. 1530 Yatton Churchw. Acc. (Som. Rec. Soc.) 145 Payd for a horse locke to y⊇ cherche yatte, viij{supd}. 1573 Tusser Husb. xvii. (1878) 38 Soles, fetters, and shackles, with horselock and pad. 1623 Fletcher & Rowley Maid of Mill iii. i, Horse-locks nor chains shall hold her from me. 1680 Lond. Gaz. No. 1569/4 A little..Nag..a Horse-lock on his near foot before. 1736 N. Jersey Archives (1894) XI. 483 He [one escaped from prison] had a Horse-Lock on one of his Legs.

Oxford English Dictionary

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