What is Crow ?
Crow is (noun) a large black bird The crows make such a noise in the trees that it wakes us up. as the crow flies in a straight line It’s only a couple of miles as the crow flies, but since there’s no bridge over the river, it takes over half an hour to drive there.(verb) 1. (of a cock) to make a loud call The sound of the cock crowing woke them all up. 2. to crow about something to boast about something He’s always crowing about his success with women. Stop crowing – just because you’ve won one game doesn’t mean you’re going to win the competition. to crow over someone to be happy because you have beaten someone or because someone has made a mistake
source: Easier English, Student Dictionary Upper Intermediate Level