1. (

• obstruction ,
• blockage

) the physical condition of blocking or filling a passage with an obstruction ;

2. (

• blockage ,
• block ,
• closure ,
• occlusion ,
• stop ,
• stoppage

) an obstruction in a pipe or tube; "we had to call a plumber to clear out the blockage in the drainpipe" ;

3. (

• blockage ,
• closure ,
• occlusion

) the act of blocking ;