A series of railroad cars moved as a unit by a locomotive or by integral motors. A succession of vehicles or pack animals traveling in the same direction. A long piece of material attached to the back of a formal dress or robe that trails along the ground. A trail of gunpowder for firing an explosive charge. Teach (a person or animal) a particular skill or type of behavior through practice and instruction over a period of time. Point or aim something, typically a gun or camera, at. Go by train. Entice (someone) by offering pleasure or a reward.