barrier
Definition
noun
anything which makes it difficult for someone to do something, especially to send goods from one place to another
Usage
ExampleThey considered imposing trade barriers on some food products.
"...a senior European Community official has denounced Japanese trade barriers, saying they cost European producers $3 billion a year" [Times]
"...to create a single market out of the EC member states, physical, technical and tax barriers to free movement of trade between member states had to be removed. Imposing VAT on importation of goods from other member states was seen as one such tax barrier" [Accountancy]
