adv. At large; widely; broadly; over a wide space; as, a tree spreads its branches abroad. Without a certain confine; outside the house; away from one's abode; as, to walk abroad. Beyond the bounds of a country; in foreign countries; enemies abroad. Before the public at large; throughout society or the world; here and there; widely. To be abroad. (a) To be wide of the mark; to be at fault; as, you are all abroad in your guess. (b) To be at a loss or nonplused.