There are seven meanings listed in OED's entry for the word mum, four of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.
The meaning of MUM is silent. How to use mum in a sentence.
mum noun [C] (FLOWER) short form of chrysanthemum (Definition of mum from the Cambridge Academic Content Dictionary © Cambridge University Press)
Definition of mum noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
mum noun - Definition, pictures, pronunciation and usage notes | Oxford ...
Used as a command to stop speaking. Say nothing of the secret you know: Mum's the word on the surprise party. [Middle English mom, mum, perhaps imitative of closing one's lips.] 1. To act or play in a pantomime. 2. To go merrymaking in a mask or disguise especially during a festival.
This comprehensive glossary entry unravels the full meaning, definition, and etymology of "mum." Discover its various uses through examples, from informal address to botanical terms, for a deeper understanding.
Silent; not speaking. Used as a command to stop speaking. To wear a mask or costume in fun; specif., to act as a mummer at Christmastime. To go merrymaking in a mask or disguise especially during a festival. Mother. A chrysanthemum. A strong beer. One's mother. I wish Mum and Dad didn't argue so much. Mum's the word on the surprise party.
mum, n.¹, int., & adj. meanings, etymology and more | Oxford English ...