Fortitude (5)
'fortitude' is the definition.
(grit is a kind of fortitude)
This is all the clue.
(Other definitions for grit that I've seen before include "Small particles of stone or sand" , "called for on icy roads" , "Fragments to sprinkle on roads" , "Hard particles for firmness of character" , "Indomitable courage" .)
'fortitude' is the definition.
(I know that guts is a type of fortitude)
This is all the clue.
(Other definitions for guts that I've seen before include "stamina!" , "Courage; entrails" , "Fortitude and determination" , "Pluck - viscera" , "Courage, determination" .)
'fortitude' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for endurance that I've seen before include "ability to survive" , "Ill-fated vessel" , "Lasting nature" , "Crushed ship" , "ship bound for the Antarctic" .)
'fortitude' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for spine that I've seen before include "Vertebral column" , "Thorn" , "Vertebrae, complete" , "Part of a book" , "Part of book's jacket" .)