from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Courage and fortitude; spirit: troops who showed their mettle in combat.
- n. Inherent quality of character and temperament.
- idiom on (one's) mettle Prepared to accept a challenge and do one's best.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A quality of endurance and courage.
- n. Good temperament and character.
- n. Metal; a metallic substance.
from the GNU version of the Collaborative International Dictionary of English
- n. Substance or quality of temperament; spirit, esp. as regards honor, courage, fortitude, ardor, etc.; disposition; -- usually in a good sense.
from The Century Dictionary and Cyclopedia
- n. Same as metal.
- n. Physical or moral constitution; material.
- n. Natural tempera me ut; specifically, a masculine and ardent temperament; spirit; courage; ardor; enthusiasm.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the courage to carry on
Variant of metal.(American Heritage® Dictionary of the English Language, Fourth Edition)
Originally a variant of metal. (Wiktionary)