zeni coin
Archaic term for a type of old Japanese coin, synonymous with 銭 (ぜに) and 鳥目 (ちょうもく). Used in historical or numismatic contexts.
See also: 銭 (ぜに) · 鳥目 (ちょうもく)
During the Edo period, coins called gagan were in circulation.
A Sino-Japanese term meaning “goose eye,” used for a small round coin whose central hole and surrounding metal suggested an eye.