1. sit on - Adjective
2. sit on - Verb
(idiomatic) To block, suppress, restrain.
The chairman sat on the report until the end of the legislative session.
(idiomatic, informal) To restrain (a person).
He started to act up, but she sat on him.
(idiomatic) To take no action on; to hold in reserve without actually using.
I sent the boss my proposal three weeks ago and he's just been sitting on it.
To be a member of.
He sits on the appropriations committee.
To hold an official inquiry regarding; to deliberate about.
Used other than figuratively or idiomatically: see sit, on.
The cat sat on the mat.
sit-on (not comparable)
Designed to be sat on.
a sit-on lawnmower, a sit-on suitcase
sit-on
We can't all be heroes, because somebody has to sit on the curb and applaud when they go by. Will Rogers
You can make a throne of bayonets, but you can't sit on it for long. Boris Yeltsin
I sit on a man's back, choking him and making him carry me, and yet assure myself and others that I am very sorry for him and wish to ease his lot by all possible means - except by getting off his back. Leo Tolstoy
When a hen is brooding, another hen cannot sit on her eggs. Sudanese Proverb
If you want your eggs hatched, sit on them yourself. Haitian Proverb
If you are going to sit on it for three years, the seat will certainly get warm. Japanese Proverb