A bell-ringer is someone who rings church bells. In many English towns that is not one person pulling one rope for a single ding. A small team stands in the tower and rings a set of bells in careful patterns — before a service, at a wedding, on a feast day. The word is plain and a little old-fashioned in a good way: it names the person by the work. You meet it in village life, church notices, and stories more than in city offices. Though actually, English also has campanologist for someone who studies or practises bell-ringing as a craft; everyday people still say bell-ringer. The hyphen keeps the meaning tight. Without it, ringer on its own can wander: a doorbell, a telephone, or, in sport, a surprise player slipped into a team. Bell-ringer, in the dictionary sense you want here, stays in the tower.