noun
persimmon-juice varnished fan
A traditional Japanese fan (uchiwa) coated with kakishibu (persimmon tannin) for durability and a characteristic reddish-brown color.
祖母の家には古い渋団扇が何本も飾ってある。
At my grandmother's house, several old persimmon-juice varnished fans are displayed.
Compound of 渋 (shibu, 'persimmon tannin') and 団扇 (uchiwa, 'flat fan'). The exact historical origin is uncertain, but the term straightforwardly describes a fan treated with kakishibu.