(1):

(n.) One who foretells events by omens; a soothsayer; a diviner; a prophet.

(2):

(n.) An official diviner who foretold events by the singing, chattering, flight, and feeding of birds, or by signs or omens derived from celestial phenomena, certain appearances of quadrupeds, or unusual occurrences.

(3):

(v. i.) To conjecture from signs or omens; to prognosticate; to foreshow.

(4):

(v. i.) To anticipate, to foretell, or to indicate a favorable or an unfavorable issue; as, to augur well or ill.

(5):

(v. t.) To predict or foretell, as from signs or omens; to betoken; to presage; to infer.