noun
sen (1/100 yen)
Historical currency unit; 1 sen = 1/100 yen. No longer used in modern transactions, but appears in historical contexts and fixed expressions.
戦前は一銭で駄菓子が買えた。
Before the war, you could buy cheap sweets for one sen.
noun
coin of base metal
Refers to coins made of non-precious metals, as opposed to gold or silver coins. Often used in contrast with 金 (きん) or 銀 (ぎん).
See also: 銭 (ぜに)
この時代の銭は銅でできている。
Coins of this period are made of copper.
noun
1/1000 kan (currency)
Obsolete currency unit: 1/1000 of a 貫 (kan). Used in the Edo period and earlier.
See also: 貫
江戸時代の貨幣制度では、一貫は千銭に相当した。
In the Edo-period currency system, one kan was equivalent to 1000 sen.
noun
1/1000 kan (mass)
Archaic unit of mass: 1/1000 of a 貫 (kan, approx. 3.75 kg). Extremely rare; primarily of historical interest.
古い文献では、銭が質量の単位として使われることがある。
In old documents, sen is sometimes used as a unit of mass.
From Middle Chinese 錢 (dzjen, 'coin, money'). The reading せん is the Sino-Japanese on'yomi.