Rare term for a sliding bolt or latch, typically on a door or gate. More common words include かんぬき or ボルト.
古い蔵の扉には、さし錠が付いていた。
The old storehouse door had a bolt.
Standard kanji spelling for this rare term.
Mixed kanji-kana spelling; may be easier to read for some learners.
Compound of 挿す (さす, 'insert') and 錠 (じょう, 'lock'). The exact historical derivation is uncertain, but the spelling reflects the function of a bolt inserted into a lock.