/ˈteɪlˌbæks/
NOUN
Lines of motor vehicles that form when traffic is slowed or stopped, often because of accidents, roadworks, or heavy traffic.
Long queues of vehicles waiting or moving slowly because roads are congested or obstructed.
NOUN
Running backs or halfbacks who line up farthest behind the line of scrimmage, particularly in an I-formation.
Offensive backs positioned behind the other players in the backfield, typically responsible for carrying the ball, blocking, or receiving passes.