Webster’s Revised Unabridged Dictionary · 1913
Champaign
Cham·paign′ (shăm·pān′; 277), n. [OF. champaigne; same word as campagne.] A flat, open country.
Fair champaign, with less rivers interveined. Milton.
Through Apline vale or champaign wide. Wordsworth.
Cham·paign′, a. Flat; open; level.
A wide, champaign country, filled with herds. Addison.