油水

yóushuǐ
  1. grease
  2. profit
  3. ill-gotten gains

CEDICT

Entry Composition

1 油 yóu
  1. oil
  2. fat
  3. grease
  4. petroleum
  5. to apply tung oil, paint or varnish
  6. oily
  7. greasy
  8. glib
  9. cunning
2 水 shuǐ
  1. water
  2. (after a name) ... River
  3. to swim (used mostly in 会水 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