Meaning of the word "must have" in English

What does "must have" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

must have

US /mʌst hæv/
UK /mʌst hæv/

Phrase

something that is highly desirable or essential

Example:
A good coffee machine is a must-have for any kitchen.
This new smartphone is the season's must-have gadget.