Plain, v. t. [imp. & p. p. Plained p. pr. & vb. n. Plaining.]
  1. To plane or level; to make plain or even on the surface. [R.]
     We would rake Europe rather, plain the East.   --Wither.
  2. To make plain or manifest; to explain.
     What's dumb in show, I'll plain in speech.   --Shak.
  ◄ ►
  Plain·ing, n. Complaint. [Poetic]
  Plain·ing, a. Complaining. [Poetic]
  ◄ ►