road·block

[rohd-blok]
noun
1.
an obstruction placed across a road, especially of barricades or police cars, for halting or hindering traffic, as to facilitate the capture of a pursued car or inspection for safety violations.
2.
an obstruction on a road, as a fallen tree or a pile of fallen rocks.
3.
a hastily built barricade, as of barbed wire, erected across a road to hold up the advance of an enemy.
4.
an action, condition, etc., that obstructs progress toward an objective: Nationalism is a roadblock to European unity.
verb (used with object)
5.
to halt or obstruct with or as if with a roadblock.
00:10
Roadblock is one of our favorite verbs.
So is hornswoggle. Does it mean:
to bark; yelp.
to swindle, cheat, hoodwink, or hoax.

Origin:
1935–40; road + block

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
roadblock (ˈrəʊdˌblɒk) [Click for IPA pronunciation guide]
 
n
1.  a barrier set up across a road by the police or military, in order to stop a fugitive, inspect traffic, etc
2.  a difficulty or obstacle to progress

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
Another roadblock hindering solar cells is that much of the light they collect
  is wasted as heat and not converted to electricity.
To capture this growth, technology and the corresponding information overload
  is both a roadblock and enabler.
State medical society a roadblock to legislation barring.
The sea had been so close to the roadblock that it lapped right up to its
  perimeter of sandbags at high tide.
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