team-mate

Something broke and the nigh leader swung around until he was at right angles with his team-mate.

Rushed out after the retreating enemy to avenge his team-mate, I guess.

The other members of the team can help their team mate, whose turn it is, by suggesting other countries.

All the Number 5's go to the blackboard and write their words directly after those written by their previous team mate.

His team mate and the three other mules tethered nearest to him had vanished.