1
koban;small oval gold coin used in the Edo period
See also:
大判 (おおばん)
それじゃ猫に小判だ。
It is like casting pearls before swine.
2
oval;elliptical;oblong
See also:
小判型 (こばんがた)
3
small size (of paper)
See also:
判 (はん)
1
Koban