IPA: /ˈteɪlˌbæk/
KK: /ˈteɪlˌbæk/
A player in football who is positioned farthest back from the line where the play starts, or a line of cars that forms when traffic slows down or stops.
During the game, the tailback made an impressive run down the field.
Tailback → It is formed from "tail" (from Old French *tail*, meaning the rear part) and "back" (from Old English *bæc*, meaning the rear or back side). The word "tailback" refers to a line of vehicles that extends back from a point of congestion, resembling a tail extending from the back of something.
Think of a 'tail' as the 'rear part' and 'back' as the 'rear side' — together, they describe a line of vehicles extending back like a tail.