a person who discusses news, sports events, weather, or the like, as on television or radio.
2.
a person who makes commentaries.
Origin: 1350–1400; ME < LL commentātor interpreter, equiv. to commentā(rī) to interpret (L: to think about, prepare, discuss, write, perh. freq. of comminīscī to devise; see comment) + L -tor-tor
[kom-uh
n-tey-ter] 