From the root س م ك (s m k), meaning “to be elevated or lofty”, “to be supported or held up”, “to sustain”; hence the meaning of “a source of sustenance”, “a mainstay or staple-food”. Cognate with Hebrew סָמַך (samak, “to lean, lay, rest, support”) attested in the Bible with the similar semantic sense “to sustain” or “to nourish”.