Meanings
The word gravy by itself was used prior to any attestable use of gravy train to characterise cushy situations. It is a shortening of the phrase riding the gravy train, referring to "a transportation vehicle that carries a number of people going the same way" or "to teach people". Note also phrases with hog train as possible source of analogy.
How to pronounce "gravy train":
AU
An occupation or situation that generates considerable income or benefits while requiring little effort and carrying little risk.
Example Sentences
1
She landed a job on the gravy train and is making a lot of money.
2
After winning the lottery, he hopped on the gravy train and started living a luxurious life.
3
He thought investing in cryptocurrency would put him on the gravy train, but he ended up losing all his money.
4
Some people believe that being born into a wealthy family is being on the gravy train.
5
She married a successful businessman and got on the gravy train with him.