A kind of cast-iron padlock. / Used other than figuratively or idiomatically: see jail, lock.

(Ireland, informal) The requirement that approval is received from the Irish government, the Dáil (parliament), and the United Nations, prior to any overseas military action by Irish defence forces.

A device, used mainly in homebrewing, that allows carbon dioxide to escape from a fermenter without allowing air to enter

(combat sports) Any lock designed to hyperextend one of the joints of the body, leading to pain and/or injury.

Alternative form of lovelock / A padlock symbolizing two people's love for each other.

A long tuft of hair left on the crown of the head by the warriors of some Native American tribes.

padlock (obsolete)

(firearms) A lock in which the hammer rebounds to half cock after striking the cap or primer.

A lock that closes or secures itself by means of a spring.

A device for firing a cannon by a percussion primer.