Entry 2 senses Webster, 1913 Dom /(dŏm)/ · IPA /dɑm/ 01 n. A title anciently given to the pope, and later to other church dignitaries and to some monastic orders. See Don, and Dan. 1. A title anciently given to the pope, and later to other church dignitaries and to some monastic orders. See Don, and Dan. See: Don, Dan 2. In Portugal and Brazil, the title given to a member of the higher classes.