Meaning Of Must

v. i. / auxiliary

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.
v. i. / auxiliary

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.
n.

The expressed juice of the grape, or other fruit, before fermentation.
n.

Mustiness.
v. t. & i.

To make musty; to become musty.