oil patch
/ˈɔɪl ˌpatʃ/noun
1A patch of oil on a floor or other surface; especially an oil slick on the sea or some other area of water.
2 Informal (originally US ). An oil-producing area; the oil industry in a particular area.
Origin
Mid 19th century (in an earlier sense). From oil + patch.
- don't count your chickens before they're hatched
- don't give it another thought
- don't give up the (or your) day job
- don't hold your breath
- don't I know it!
- don't-know
- don't knowist
- don't look a gift horse in the mouth
- don't mention it
- don't (or I wouldn't) bet on it
- don't put all your eggs in one basket
- don't spoil the ship for a ha'p'orth of tar
- don't start (or don't you start)
- don't talk to me about ——
- don't you believe it!
- don't you know
- don't —— me
- donut
- doo
- doobie
- doobrey
- doobrie
- doobry
- doodad
- doodah