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gum sth up

phrasal verb with gum
 
 
/ɡʌm/ verb [T] (-mm-) old-fashioned

Definition

to prevent something from working or opening in the usual way by covering it with a sticky substance: When I woke up this morning my eyes were all gummed up.Closing and blockingCovering and adding layers
(Definition of gum sth up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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