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1.
The holdup in traffic caused by drivers slowing down to see what happened in an accident or other event on the road. See also rubberneck.
The wrecked car was cleared from the road but the traffic was still slowed due to the gaper's block.
by J W August 02, 2005

Words related to gaper's block

rubberneck
 
2.
People that slow down when they see an accident in the road just to see what's going on often causing the people behind them to blare their horn at them to move on down the road!

Happens a lot of times on the Interstates and the speed limit is 60-70wpm!
Everytime we head up to Interstate 40 there is a accident on our side of the road and a Gaper's Block is sure to be seen!
by Gamecocklady October 29, 2013