What is the meaning of Commentator?

A person who comments; especially someone who is paid to give his/her opinions in the media about current affairs, sports, etc.

A medieval legal scholar who authored prose commentaries on civil law; a member of a comparatively innovative 14th-century school of jurisprudence, typically distinguished from the earlier glossators.

inventor, author

interpreter

jailer

second/third-person singular future active imperative of commentor

Source: wiktionary.org