Longman Dictionary of Contemporary English homepage

gum tree

 noun
     
Related topics: Plants
gum tree [countable]
1HBP a tall tree which produces a strong-smelling oil that is used in medicine [= eucalyptus]
2

be up a gum tree

British English informal to be in a very difficult situation
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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