unclogger

verb (used with object), un·clogged, un·clog·ging.

1. to free of an obstruction or impediment: to unclog a drain; to unclog rush-hour traffic.

verb (used without object), un·clogged, un·clog·ging.

2. to become unclogged: I can’t wash the dishes until the drain unclogs.

verb -clogs, -clogging or -clogged

1. (tr) to remove an obstruction from (a drain, etc)