mum /ˈmʌm/
  菊花,沈默(a.)沈默的(vi.)演啞劇
  Mum a.  Silent; not speaking; as, to keep mum.
     The citizens are mum, and speak not a word.   --Shak.
  Mum, interj. Be silent! Hush!
     Mum, then, and no more.   --Shak.
  Mum, n.  A sort of strong beer, originally made in Brunswick, Germany.
     The clamorous crowd is hushed with mugs of mum.   --Pope.
  ◄ ►
  mum
       adj : failing to speak or communicate etc when expected to; "the
             witness remained silent" [syn: silent]
       n 1: of China [syn: florist's chrysanthemum, florists'
            chrysanthemum, Dendranthema grandifloruom, Chrysanthemum
            morifolium]
       2: informal terms for a mother [syn: ma, mama, mamma, mom,
           momma, mommy, mammy, mummy, mater]
       3: secrecy; "mum's the word"
       [also: mumming, mummed]