"술래" means "tagger" or "it" in the tag game. Quoted from https://en.wikipedia.org/wiki/Tag_(game) A group of players (two or more) decide who is going to be "it", often using a counting-out game such as eeny, meeny, miny, moe. The player selected to be "it" then chases the others, attempting to get close enough to "tag" one of them (touching them with a hand) while the others try to escape.[1] A tag makes the tagged player "it". In some variations, the previous "it" is no longer "it" and the game can continue indefinitely, while in others, both players remain "it" and the game ends when all players have become "it".