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good oil

British  

noun

  1. slang true or reliable facts, information, etc

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A good oil delivers enough of a burn to cause a catch in your throat and often a cough.

From The Guardian • Apr. 23, 2017

“A good wine lasts one dinner; a good oil lasts many meals,” said Michele Porcu of I Greppi di Silli.

From New York Times • May 22, 2015

What were the drivers, where did all this good oil come from?

From Forbes • Jul. 14, 2014

For them, it seems, the only good oil field is a tapped oil field.

From Time Magazine Archive

It sounds like automobile parlance to say "Use good oil," but this really applies equally as strongly to a lawn-mower.

From Making a Lawn by Doogue, Luke Joseph