Definition of prairillon in English:

prairillon

(also prairion)

noun

North American
rare
  • A small prairie.

Origin

Early 19th century; earliest use found in Alexander Henry (1739–1824). Apparently from North American French prairillon from prairie + -illon, suffix (from -ille + -on: see -oon).

Pronunciation

prairillon

/prɛːˈrɪljən/