What is the mean of a umpire in cricket?

Answer 1

An Umpire :

is a person who has the authority to make judgements "on the cricket field", according to the Laws of Cricket. Besides making decisions about legality of delivery, appeals for wickets and general conduct of the game in a legal manner, the umpire also keeps a record of the deliveries and announces the completion of an over and start of a powerplay.

A Referee :

is an official appointed to oversee professional cricket matches and remains "off the field of play" at all times during the actual play of the game, observing events from a spectator area. The referee makes no decisions of any relevance to the play or result of the game; such decisions are the sole responsibility of the appointed umpires.

The match referee's responsibility is to ensure that the ICC Cricket Code of Conduct is upheld during the game, to assess any breaches of the Code, and to hand out penalties for any breaches.

Following every game, the match referee composes and submits a match report to the ICC, noting any events or actions by players or umpires that may be a concern in terms of the Code of Conduct or the Laws of Cricket.

Answer 2

The person who observe the whole match, and takes the decisions whether appealed for it or not and his decisions can not be changed though he is wrong or right