The Collaborative International Dictionary of English v.0.48:
Steerer \Steer"er\ (-[~e]r), n. One who steers; as, a boat steerer. [1913 Webster]WordNet (r) 3.0 (2006):
steerer n 1: the person who steers a ship [syn: helmsman, steersman, steerer] 2: a beguiler who leads someone into danger (usually as part of a plot) [syn: decoy, steerer]