power oil
noun
Oil brought up from a well and used on the spot as a source of power.
Origin
1950s.
- under one's belt
- under one's breath
- under one's feet
- under one's own steam
- under one's wing
- under (or in) no circumstances
- under (or in) the circumstances
- under (or on) oath
- under (or on) penalty of
- underpaid
- underpainting
- underpants
- underpart
- underpass
- underpay
- underpayment
- underperform
- underperformance
- underpin
- underpinning
- under plain cover
- underplant
- underplay
- underplot
- underpopulated