To be obliged; to be necessitated; -- expressing either physical or moral necessity; as, a man must eat for nourishment; we must submit to the laws.
To be morally required; to be necessary or essential to a certain quality, character, end, or result; as, he must reconsider the matter; he must have been insane.
Likewise must the deacons be grave.
Morover, he [a bishop] must have a good report of them which are without.
Must
n.
The expressed juice of the grape, or other fruit, before fermentation.
No fermenting must fills . . . the deep vats.
Mustiness.
Must
v. t. & i.
To make musty; to become musty.
must
a.
Being in a condition of dangerous frenzy, usually connected with sexual excitement; -- said of adult male elephants which become so at irregular intervals, typicaly due to increased testosterone levels. (Zool.)