Meaning of the word mustn't in English

What does mustn't mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

mustn't

US /ˈmʌs.ənt/
UK /ˈmʌs.ənt/

Contraction

contraction of 'must not'

Example:
You mustn't touch that hot stove.
We mustn't forget to lock the door.