潤滑油

润滑油
rùnhuáyóu
lubricating oil

CEDICT

lubricating oil; grease

Wiktionary

使機械潤滑，運轉靈活的油料。

重編國語辭典

Entry Composition

1 潤滑 rùnhuá
  1. smooth
  2. oily
  3. sleek
  4. to lubricate
2 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