Definition of handlock in English:

handlock

Pronunciation /ˈhan(d)lɒk/

noun

historical, rare
  • A lockable metal ring used to secure the wrist of a prisoner to someone or something; a manacle, a handcuff; (in plural) a linked pair of these, used especially to secure a prisoner's wrists together.

Origin

Mid 16th century; earliest use found in State Papers Henry VIII. From hand + lock.