Entry 2 senses · 2 variants Webster, 1913 Champaign /chăm-pān'/ · Cham·paign · IPA /ˈʃæmpeɪn/ n. a. 01 n. A flat, open country. 1. A flat, open country. “Fair champaign, with less rivers interveined.” — Milton. “Through Apline vale or champaign wide.” — Wordsworth. 02 a. Flat; open; level. 1. Flat; open; level. “A wide, champaign country, filled with herds.” — Addison.