Grit (4)
'grit' is the definition.
(I know that grit can be written as sand)
This is the entire clue.
(Other definitions for sand that I've seen before include "Fine stone particles" , "Desert material" , "Rock particles; smooth" , "Beach grit" , "woman writer Chopin loved" .)
'grit' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for gravel that I've seen before include "Coarse sand with small stones used for roads, driveways etc" , "Shingle" , "Coarse sand mixed with small stones" , "Rocky fragments" , "bits of rock" .)
'grit' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for mettle that I've seen before include "'Nerve, heart, courage (6)'" , "Bravery" , "Fortitude" , "Inherent character - courage" , "Temperament; courage" .)