call it a day

call it a day  {v. phr.}
To declare that a given day's work has been accomplished and go home; to quit for the day.
"Let's call it a day," the boss said, "and go out for a drink."
It was nearly midnight, so Mrs. Byron decided to call it a day, and left the party, and went home.
The four golfers played nine holes and then called it a day.
Compare: CLOSE UP SHOP.
Categories: call {v. phr.}