from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Used formerly as a title for male members of Portuguese and Brazilian royalty, aristocracy, and hierarchy, preceding the given name.
- n. Roman Catholic Church Used as a title before the names of Benedictine and Carthusian monks in major or minor orders.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A diminutive of the male given name Dominic
- proper n. An Indo-Aryan ethnic group.
from the GNU version of the Collaborative International Dictionary of English
- n. A title anciently given to the pope, and later to other church dignitaries and to some monastic orders. See don, and dan.
- n. In Portugal and Brazil, the title given to a member of the higher classes.
Portuguese, from Latin dominus, lord, master; see dem- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
Related to Rom and Lom. (Wiktionary)