Entry 3 senses · 2 variants Webster, 1913 Oppidan · Op·pi·dan · IPA a. n. 01 a. Of or pertaining to a town. 1. Of or pertaining to a town. 02 n. An inhabitant of a town. 1. An inhabitant of a town. 2. A student of Eton College, England, who is not a King's scholar, and who boards in a private family.