Definition of unclog verb from the Oxford Advanced American Dictionary

 

unclog

 verb
verb
NAmE//ʌnˈklɑɡ//
 
, NAmE//ʌnˈklɔɡ//
 
unclog somethingVerb Forms present simple I / you / we / they unclog he / she / it unclogs past simple unclogged -ing form unclogging
 
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to clear something, for example a pipe, by removing something that is blocking it How do I unclog a sink pipe?