WordWeb Online

1. An official at a baseball game
   - ump
    
2. Someone chosen to judge and decide a disputed issue
   "an umpire was appointed to settle the tax case"
   - arbiter, arbitrator

1. Be a referee or umpire in a sports competition
   - referee

Derived forms: umpired, umpires, umpiring

See also: umpirage

Type of: evaluator, judge, official

Encyclopedia: Umpire