occlusion

(n) closure or blockage (as of a blood vessel)
(n) (meteorology) a composite front when colder air surrounds a mass of warm air and forces it aloft occluded front,
(n) (dentistry) the normal spatial relation of the teeth when the jaws are closed
(n) an obstruction in a pipe or tube
- we had to call a plumber to clear out the blockage in the drainpipe
blockage, stoppage, closure, block, stop,
(n) the act of blocking blockage, closure,

occluded front blockage stoppage closure block stop

occlusive