metate

enUK
metatemetate (left) and mano (right)

me·ta·te

M0249700 (mĭ-tä′tē, mĕ-tä′tĕ)n. A stone block with a shallow concave surface, used with a mano for grinding corn or other grains.
[American Spanish, from Nahuatl metlatl.]

metate

(məˈtɑːtɪ) na flat stone that is used in conjunction with a smaller stone to grind grain, coffee, etc

me•ta•te

(məˈtɑ ti, -teɪ)

n. a flat stone with a depression for holding maize or other grains to be ground. [1825–35, Amer.; < Mexican Spanish < Nahuatl metlatl]