Definition of forget-me-not noun from the Oxford Advanced Learner's Dictionary

 

forget-me-not

 noun
noun
BrE
 
; NAmE
 
 
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a small wild plant with light blue flowers Word Origin mid 16th cent.: translating the Old French name ne m'oubliez mye; said to have the virtue of ensuring that the wearer of the flower would never be forgotten by a lover.
See the Oxford Advanced American Dictionary entry: forget-me-not