1. become or cause to become obstructed; - Example: "The leaves clog our drains in the Fall" - Example: "The water pipe is backed up" [syn: clog, choke off, clog up, back up, congest, choke, foul]
WordNet (r) 3.0 (2006):
clog up
v 1: become or cause to become obstructed; "The leaves clog our
drains in the Fall"; "The water pipe is backed up" [syn:
clog, choke off, clog up, back up, congest,
choke, foul] [ant: unclog]