'Mum' definitions:

Definition of 'mum'

From: WordNet
adjective
Failing to speak or communicate etc when expected to; "the witness remained silent" [syn: mum, silent]
noun
Of China [syn: florist's chrysanthemum, florists' chrysanthemum, mum, Dendranthema grandifloruom, Chrysanthemum morifolium]
noun
Informal terms for a mother [syn: ma, mama, mamma, mom, momma, mommy, mammy, mum, mummy]
noun
Secrecy; "mum's the word"

Definition of 'Mum'

From: GCIDE
  • Mum \Mum\, a. [Of imitative origin. Cf. Mumble.] Silent; not speaking; as, to keep mum. --Thackeray. [1913 Webster]
  • The citizens are mum, and speak not a word. --Shak. [1913 Webster]
  • mum's the word keep this a secret; don't tell anybody. [PJC]

Definition of 'Mum'

From: GCIDE
  • Mum \Mum\, interj. Be silent! Hush! [1913 Webster]
  • Mum, then, and no more. --Shak. [1913 Webster]

Definition of 'Mum'

From: GCIDE
  • Mum \Mum\, n. Silence. [R.] --Hudibras. [1913 Webster]

Definition of 'Mum'

From: GCIDE
  • Mum \Mum\, n. [G. mummere, fr. Christian Mumme, who first brewed it in 1492.] A sort of strong beer, originally made in Brunswick, Germany. --Addison. [1913 Webster]
  • The clamorous crowd is hushed with mugs of mum. --Pope. [1913 Webster]

Synonyms of 'mum'

From: Moby Thesaurus