n. A Middle English form of doom.n. The Portuguese form of don, used in Portugal and Brazil. In Portugal this title is confined to the king and the members of the royal family.n. The joker or blank card used in playing dom pedro.n. A title formerly given to the pope, and afterward to Roman Catholic dignitaries and members of some monastic orders.n. A suffix, originally an independent word, meaning ‘jurisdiction,’ hence province, state, condition, quality, as in kingdom, earldom, popedom, etc., Christendom, freedom, halidom, wisdom, etc.: much used also in colloquial or humorous formations, as in uppertendom.n. An abbreviation of Dominion.