Definitions

1. noun

a region of low-lying land without trees or rocks

“The prairie was a vast, open plain stretching as far as the eye could see.”

2. adjective

lacking interest or excitement; dull

“The plain, grey walls of the prison cell were a stark contrast to the vibrant colors of the city outside.”

3. verb

to explain or describe (something) in a clear and simple way

“The teacher had to plain the complex math formula to her students.”

4. adverb

in an open or unbroken way; directly

“The hikers had to plain the steep mountain path to reach the summit.”