tailback
US /ˈteɪl.bæk/
UK /ˈteɪl.bæk/
1.
a long line of traffic that is moving very slowly or not at all
:
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There was a huge tailback on the motorway after the accident.
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The holiday weekend always brings long tailbacks on major roads.
2.
a player in American football who plays in the offensive backfield, typically carrying the ball
:
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The tailback broke through the defense for a touchdown.
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He was a star tailback in college before going pro.