• noun spirit and resilience in the face of difficulty. "http://www.chambersharrap.co.uk/chambers/feat...
"mettle noun, literary 1 courage, determination and endurance. 2 character; personal qualities • show one's mettle. "http://dictionary.reference.com/browse/mettle
"Webster's Revised Unabridged Dictionary - Cite This Source - Share This
Mettle\, n... Substance or quality of temperament; spirit, esp. as regards honor, courage, fortitude, ardor, etc.; disposition; -- usually in a good sense.
A certain critical hour which shall . . . try what mettle his heart is made of. --South.
Gentlemen of brave mettle. --Shak.
The winged courser, like a generous horse, Shows most true mettle when you check his course. --Pope.
To put one one's mettle, to cause or incite one to use one's best efforts.
American Heritage Dictionary - Cite This Source - Share This met·tle Audio Help (mět'l) Pronunciation Key
Courage and fortitude; spirit: troops who showed their mettle in combat.
Inherent quality of character and temperament.