1. medicine
2. drug
3. substance used for a specific purpose (e.g. poisoning, explosion, fermenting)
4. to poison

classifiers: 種, 服, 味

1. water
2. (after a name) ... River
3. to swim (used mostly in 會水 huìshuǐ and 水性 shuǐxìng)
4. (coll.) lacking in substance; shoddy
5. (bound form) additional cost; extra income
6. classifier for washings of a garment