Definition of "mum" []

• Not verbalizing; silent. (adjective)
• Used as a command to stop speaking. (interjection)
• Mum's the word Say nothing of the secret you know: Mum's the word on the surprise party. (idiom)
• To act or play in a pantomime. (verb-intransitive)
• To go merrymaking in a mask or disguise especially during a festival. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "We came back to mine for a while and mum didn't mind that she was here. she was actually really nice and asked her about her exams and things, it was good. .mum even invited her to stay for dinner!!! but she had to go home, her own parents were expecting her home .... i missed her as oon as she left."
• "Start preparing your script to respond to the ’strained’ greetings you will receive from mum & dad when you are next home nothing guarantees that a post WILL be read more than an imperative “Please don’t read this link mum& dad”, in any case superfluous since its content is divulged in subsequent responses – and you told us they recommended your blog to their friends!"
• "The only thing I sometimes pinch off my mum is her turn of phrase."