Entry 1 sense Webster, 1913 Caledonian /kălˌ-ĭd-ōn'-ē-ən/ · Cal·e·do·ni·an · IPA /ˌkæləˈdoʊni.ən/ 01 a. Of or pertaining to Caledonia or Scotland; Scottish; Scotch. 1. Of or pertaining to Caledonia or Scotland; Scottish; Scotch.