Search Result for "unclog": 
Wordnet 3.0

VERB (1)

1. become or cause to become unobstructed;
- Example: "The chemical that we poured down the drain unclogged it"



The Collaborative International Dictionary of English v.0.48:

Unclog \Un*clog"\, v. t. [1st pref. un- + clog.]
   To disencumber of a clog, or of difficulties and
   obstructions; to free from encumbrances; to set at liberty.
   --Shak.
   [1913 Webster]


WordNet (r) 3.0 (2006):

unclog
    v 1: become or cause to become unobstructed; "The chemical that
         we poured down the drain unclogged it" [ant: back up,
         choke, choke off, clog, clog up, congest, foul]