水库

水库	shuǐ kù	reservoir / CL:座
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
库	kù	warehouse / storehouse / (file) library