Meaning of the word ump in English

What does ump mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

ump

US /ʌmp/
UK /ʌmp/

Noun

a person whose job is to make sure that players obey the rules in sports such as baseball, cricket, and tennis

Example:
The baseball ump made a controversial call.
The tennis ump called the ball out.