Definition of roadblock
1a
: a barricade often with traps or mines for holding up an enemy at a point on a road covered by fire
b
: a road barricade set up especially by law enforcement officers
2
: an obstruction in a road
3
: something that blocks progress or prevents accomplishment of an objective
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Merriam-Webster unabridged
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Time Traveler for roadblock
The first known use of roadblock was in 1913
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