Definition of 'grit'

Noun

1. a hard coarse-grained siliceous sandstone
      Synonyms: gritrock gritstone
2. fortitude and determination; "he didn't have the guts to try it"
      Synonyms: backbone guts moxie sand gumption

Verb

1. cover with a grit; "grit roads"
2. clench together; "grit one's teeth"

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