English▸ noun [mass noun] a children's game in which one child chases the others and anyone who is caught then becomes the pursuer:
we began to play tag under the water.
▪ Baseball the action of tagging a runner.
▸ verb
( tags, tagging, tagged)
[with object] touch (someone being chased) in a game of tag. ▪ Baseball put (a runner) out by touching with the ball or with the hand holding the ball.