Definition of dormouse noun from the Oxford Advanced Learner's Dictionary

 

dormouse

 noun
noun
BrE BrE//ˈdɔːmaʊs//
 
; NAmE NAmE//ˈdɔːrmaʊs//
 
(pl. dormice
BrE BrE//ˈdɔːmaɪs//
 
; NAmE NAmE//ˈdɔːrmaɪs//
 
)
Wild mammals
 
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a small animal like a mouse, with a tail covered in fur See related entries: Wild mammals Word Origin late Middle English: of unknown origin, but associated with French dormir or Latin dormire ‘to sleep’ and mouse.
See the Oxford Advanced American Dictionary entry: dormouse