v (transitive) To follow behind (someone or something); to tail (someone or something).
v (transitive) To drag (something) behind on the ground.
v (transitive) To leave (a trail of).
v (transitive) To show a trailer of (a film, TV show etc.); to release or publish a preview of (a report etc.) in advance of the full publication.
v To be lose | losing, to be behind in a competition.
n The track or indication marking the route followed by something that has passed, such as the footprints of animal on land or the contrail of an airplane in the sky.
n A route for travel over land, especially a narrow, unpavedpathway for use by hikers, horseback riders, etc.
n A trailer broadcast on television for a forthcoming film or programme.