(~s)
1.
An ~ is something that blocks a road or path.
John was irritated by drivers parking near his house and causing an ~.
N-COUNT
2.
An ~ is something that blocks a passage in your body.
The boy was suffering from a bowel ~ and he died.
N-VAR
3.
Obstruction is the act of deliberately delaying something or preventing something from happening, usually in business, law, or government.
Mr Guest refused to let them in and now faces a criminal charge of ~.
N-UNCOUNT