What is the meaning of Mum?

Mother.

A chrysanthemum.

A decoration made originally of a real chrysanthemum but now usually an artificial (silk) flower combined with ribbons and marked with such indicators as the wearer's name, school name, the year, and so on; traditionally worn by girls at high school homecoming celebrations.

Silent.

Secret.

stop speaking!, stop talking!, hush!

To act in a pantomime or dumb show.

silence

A type of strong beer, originally made in Brunswick, Germany.

Alternative spelling of ma'am

eeltail catfish

breast

to be tasty

wax

candle

candle

Source: wiktionary.org