In the sports of ice hockey and rugby league, if a player is sent to the sin-bin, they are ordered to leave the playing area for a short period of time because they have done something that is against the rules
a place for transgressors, a limbo; an area in which one may confine one's self after (or in order to avert) transgressions
It was hardly a concession. for he regarded Siberia as his sin bin, a place to take to when a cooling-off period was needed.