n. One who or that which steers; a steersman.n. In a tricycle, the rod and small wheel by which the machine is turned about and guided: called front steerer or back steerer according to its place on the machine.n. In bunko swindling, one who steers or leads his victim to the rendezvous; a bunko-steerer.n. A machine for controlling the rudder of a boat or yacht.