(1):
(adv.) In a practical way; not theoretically; really; as, to look at things practically; practically worthless.
(2):
(adv.) By means of practice or use; by experience or experiment; as, practically wise or skillful; practically acquainted with a subject.
(3):
(adv.) In practice or use; as, a medicine practically safe; theoretically wrong, but practically right.
(4):
(adv.) Almost.