Pla*teau" (?), n.; pl. F. Plateaux (F. ; E. ), E. Plateaus (#). [F., fr. OF. platel, properly a little plate. See Plate.]
1.
A flat surface; especially, a broad, level, elevated area of land; a table-land.
2.
An ornamental dish for the table; a tray or salver.
© Webster 1913.