Champaign \Cham*paign"\, 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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Champaign \Cham*paign"\, a. Flat; open; level.

A wide, champaign country, filled with herds. --Addison.

Source: Webster's Revised Unabridged Dictionary (1913)