eucalyptus (tree) noun

/ˌjuː.kəlˈɪp.təsˌtriː/ n [C or U] (also gum (tree))

Definition

any of several types of tree, found especially in Australia, which produce an oil with a strong smell used in medicine and industry

eucalyptus oil

(Definition of eucalyptus (tree) noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Synonyms and related words:

If a problem preys on your mind, you think about it and worry about it a lot

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