Definitions
1.nounSomething that is mandatory or required."If you'll be out all day, a map is a must."
2.nounThe property of being stale or musty.
3.nounSomething that exhibits the property of being stale or musty.
4.nounFruit juice that will ferment or has fermented, usually from grapes.
5.nounA time during which male elephants exhibit increased levels of sexual activity and aggressiveness (also spelled musth).
6.nounAn elephant in this sexual and aggressive state.