room rent

at-home clothes

(Internet slang) dirty room

an adult son residing with his parents; generally has not yet or can not come into family inheritance / a female servant working in a daimyō, ōoku, or other high-ranking house

portrait of a sumo tournament champion

kowtow

A triangular white cloth headdress placed on the forehead to signify a ghost in traditional Japanese theatre and artwork. Also known as a tenkan.

(historical) sangaku (ema on which is written an original maths (和算) problem and solution)

(idiomatic) tiny, not enough room to swing a cat; literally, “a cat’s forehead”

calligraphy written on a frame and hung on a gate or palace