j Idioms

IDIOM ►
Meaning 1
A basketball game is started by the referee throwing up the ball between two players who try to tap it to a member of their team. It is also used when two opposing players have joint possession of the ball.
Sentence 1
The referee called for a jump ball because she could not determine which player controlled the ball.
Meaning 2
Control issues: The inability to determine anything.
Sentence 2
It is a jump ball. The two proposals are so close.
IDIOM ►
Meaning 1
to begin before the official starts the race
Sentence 1
He jumped the gun and will have to start again.
Meaning 2
to begin too soon
Sentence 2
Please don't jump the gun and begin to prepare the budget until all the figures are here.