(1):
(superl.) Affected with, or attended by, nausea; inclined to vomit; as, sick at the stomach; a sick headache.
(2):
(superl.) Affected with disease of any kind; ill; indisposed; not in health. See the Synonym under Illness.
(3):
(superl.) Having a strong dislike; disgusted; surfeited; - with of; as, to be sick of flattery.
(4):
(superl.) Corrupted; imperfect; impaired; weakned.
(5):
(n.) Sickness.
(6):
(v. i.) To fall sick; to sicken.