mum (
http://definr.com/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"