椆水

椆水	Chóu Shuǐ	old name of an unidentified river in Henan Province, mentioned by 庄子
椆	chóu	species of tree resistant to cold weather
水	Shuǐ	surname Shui
水	shuǐ	water / (after a name) ... River / to swim (used mostly in 会水 and 水性) / (coll.) lacking in substance; shoddy / (bound form) additional cost; extra income / classifier for washings of a garment