noun
female bedmate (archaic, humorous)
Archaic and humorous term for a female bed partner, likening her body to a fleshy cushion. Not used in modern Japanese outside of historical or literary contexts.
江戸時代の洒落本には「肉蒲団」という言葉が見られる。
The word 肉蒲団 appears in humorous books of the Edo period.
蒲団 (or 布団) means a futon or cushion. 肉蒲団 is a metaphorical compound using 肉 (flesh) to describe a person as a 'flesh futon'.
Compound of 肉 (niku, 'flesh') and 蒲団 (futon, 'cushion, futon'). The term is a metaphorical and humorous coinage from the Edo period, not in modern use.