Main entry: mum
Definition: secrecy
Usage: mum's the word
Main entry: ma, mama, mamma, mammy, mom, momma, mommy, mum, mummy
Definition: informal terms for a mother
Main entry: florist's chrysanthemum, florists' chrysanthemum, Dendranthema grandifloruom, Chrysanthemum morifolium, mum
Definition: of China
Definition: failing to speak or communicate etc when expected to
Usage: the witness remained silent