(1):
(adv.) Before the public at large; throughout society or the world; here and there; widely.
(2):
(adv.) Beyond the bounds of a country; in foreign countries; as, we have broils at home and enemies abroad.
(3):
(adv.) At large; widely; broadly; over a wide space; as, a tree spreads its branches abroad.
(4):
(adv.) Without a certain confine; outside the house; away from one's abode; as, to walk abroad.