Blockage

['blɒkɪdʒ] or ['blɑkɪdʒ]

(noun.) the act of blocking.

(noun.) an obstruction in a pipe or tube; 'we had to call a plumber to clear out the blockage in the drainpipe'.

Edited by Alta--From WordNet

(n.) The act of blocking up; the state of being blocked up.

Checked by Charlie