As a verb unblock
is to remove or clear a block or obstruction from.
As a noun unblocker is
one who, or that which, unblocks.
Other Comparisons: What's the difference?
To remove or clear a block or obstruction from.
To free or make available.
* 2010 , Syed Ali, Dubai: gilded cage (page 58)
- We need a plumber to unblock the sink.
English transitive verbs
- It is not just bad news about Dubai that gets blocked from the Internet; a whole range of other social networking sites have been blocked, unblocked and reblocked.
One who, or that which, unblocks.