กระดาน

Etymology
Extended from, from.

Noun

 * 1) (classifier แผ่น) board; plank.
 * 2)  (classifier แผ่น) board for writing, drawing, etc, as slate, chalkboard, markerboard, etc.
 * 3)  flat chest; flat-chested woman.

Adjective

 * 1)  flat like a board.