RhymeZone: shall definitions

Definitions of Shall:

verb: Used before a verb to indicate the simple future tense in the first person singular or plural.
verb: Used similarly to indicate determination or obligation in the second and third persons singular or plural.
verb: Used in questions with the first person singular or plural to suggest a possible future action.
verb: (obsolete) To owe.

(Definitions from Wiktionary)