Meaning of MUST in English

noun mustiness.

2. must ·add. ·noun an elephant in must.

3. must ·add. ·noun the condition of frenzy.

4. must ·vt & ·vi to make musty; to become musty.

5. must ·noun the expressed juice of the grape, or other fruit, before fermentation.

6. must ·vi or ·v·aux 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.

7. must ·add. ·noun being in a condition of dangerous frenzy, usually connected with sexual excitement;

— said of adult male elephants which become so at irregular intervals.

8. must ·vi or ·v·aux 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.

Webster English vocab.      Английский словарь Webster.