mum Meaning, Definition & Usage

  1. noun of China
    florists' chrysanthemum; Chrysanthemum morifolium; florist's chrysanthemum; Dendranthema grandifloruom.
  2. noun informal terms for a mother
    ma; mummy; mommy; mammy; momma; mamma; mom; mama.
  3. noun secrecy
    • mum's the word
  4. adjective satellite failing to speak or communicate etc when expected to
    silent.
    • the witness remained silent

WordNet

Mum adjective
Etymology
Of imitative origin. Cf. Mumble.
Definitions
  1. Silent; not speaking. Thackeray.
    The citizens are mum, and speak not a word. Shak.
Mum interjection
Definitions
  1. Be silent! Hush!
    Mum, then, and no more. Shak.
Mum noun
Definitions
  1. Silence. R. Hudibras.
Mum noun
Etymology
G. mummere, fr. Christian Mumme, who first brewed it in 1492.
Definitions
  1. A sort of strong beer, originally made in Brunswick, Germany. Addison.
    The clamorous crowd is hushed with mugs of mum. Pope.

Webster 1913