myEtymology.com: Greek etymology of plakous

Etymology of the Greek word plakous (πλακούς)

the Greek word plakous, πλακούς (a flat cake)

derived from the Greek word plax, πλάξ (anything flat; a moulding-board; flat surface ('plate', or tablet, literally or figuratively))

derived from the Proto-Indo-European root *plāk-