A boat that transports passengers across a river, it's a homonym for a tiny imaginary creature
[DOC] [TLE] Alan Cooper's Homonym List [PAR] Feb 15, 1997 ... bailing, pumping water out of a boat ... bourn, a small stream or boundary ... bus, 
large multi-passenger vehicle ... sere, natural succession of plant or animal 
communities ... cored, divested of its central part .... duel, a fight between two over 
honor ... fairy, imaginary magic person.