A judge or arbitrator.
The umpire said that he was out.Someone threw a beer can at the umpire.
Umpire
It is just "Your Out!" by the umpire.
an umpire
I have volunteered to umpire tomorrow's Little League game.
The judge of a baseball game is called an umpire.
field
Umpire.
The judiciary branch. The courts
They are called Umpires. One is the plate umpire, one is the field umpire.
Umpire
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