bolt

→ Irish: bolta

→ Japanese: ボルト (boruto)

→ Maltese: bolt

desctree

→ Russian: болт (bolt)
→ Azerbaijani: bolt
→ Ingrian: boltta

→ Scottish Gaelic: bolta

From Middle English bolt, from Old English bolt, from Proto-West Germanic *bolt, from Proto-Germanic *bultaz, perhaps from Proto-Indo-European *bʰeld- (“to knock, strike”). Compare Lithuanian beldu (“I knock”), baldas (“pole for striking”). Akin to Dutch and West Frisian bout, German Bolz or Bolzen, Danish bolt, Swedish bult, Icelandic bolti.

der

A (usually) metal fastener consisting of a cylindrical body that is threaded, with a larger head on one end. It can be inserted into an unthreaded hole up to the head, with a nut then threaded on the other end; a heavy machine screw.

A bar of wood or metal dropped in horizontal hooks on a door and adjoining wall or between the two sides of a double door, to prevent the door(s) from being forced open.

սողնակ

bar to prevent a door from being forced open


lock

Tok Pisin: lok

→ Hawaiian: laka

From Middle English lok, from Old English loc, from Proto-West Germanic *lok, from Proto-Germanic *luką from Proto-Indo-European *lewg- (“to bend; turn”).
The verb is from Middle English locken, lokken, louken, from Old English lūcan, Proto-West Germanic *lūkan, from Proto-Germanic *lūkaną. Related to luxe via Latin.


padlock

From earlier pad lock (19th c.); Middle English padlock, padlokke, from pad-, of unknown origin, + lok (“lock”). Perhaps originally a lock for a pad (“gate”), or a gate opening to a path, or a lock for a basket or pannier, from UK dialect pad (“a pannier”).

A detachable lock that can be used to secure something by means of a sliding or hinged shackle

南京錠 (なんきんじょう, Nankin-jō, literally “Nanjing lock”)


keyhole

gravitational keyhole
gravitational keyhole


alcolock

Various international studies have shown that alcolock users had 65% to 95% fewer repeat offences than drivers whose driving licence was suspended or revoked. The previous Government conducted a trial programme in 2005, but there was never any follow-up.

2013 December 10, Rehman Chishti, “Road Safety”, in parliamentary debates (House of Commons):

A mechanism that prevents a car from starting if the driver has exceeded the legal limits of alcohol consumption.


keycard lock

An electronic lock operated by a keycard.


combination lock

en-noun

combination lock (plural combination locks)

A type of lock opened by a sequence of numbers or symbols.

密碼鎖 /密码锁

lock opened by sequence of numbers or symbols


permutation lock

permutation lock (plural permutation locks)


D lock

A lock shaped like an elongated letter D, used to secure an unattended bicycle to railings etc.