Mum (?), a. [Of imitative origin. Cf. Mumble.]
Silent; not speaking.
Thackeray.
The citizens are mum, and speak not a word.
Shak.
© Webster 1913.
Mum, interj.
Be silent! Hush!
Mum, then, and no more.
Shak.
© Webster 1913.
Mum, n.
Silence.
[R.]
Hudibras.
© Webster 1913.
Mum, n. [G. mummere, fr. Christian Mumme, who first brewed it in 1492.]
A sort of strong beer, originally made in Brunswick, Germany.
Addison.
The clamorous crowd is hushed with mugs of mum.
Pope.
© Webster 1913.