Definition of grit one's teeth
- He gritted his teeth in anger/pain.
- Starting your own business can be very tough, but you just have to grit your teeth and keep working at it.
: sand, gravel
: a hard sharp granule (as of sand)
: any of several sandstones
: to give forth a grating sound
: to cause (one's teeth) to grind or grate
: to cover or spread with grit
: plural of tooth
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