The definition of grit is small, often abrasive, particles of sand or stone.(noun)
Little dirt and pebbles stuck in the bottom of your shoe are an example of grit.
See grit in Webster's New World College Dictionary
Origin: with Early ModE vowel shortening < ME grete < OE greot, akin to Ger griess IE base *ghrēu-, to rub hard over, crumble > great
See grit in American Heritage Dictionary 4
Origin: Middle English gret, sand
Origin: , from Old English grēot.
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