noun.
The qualities characteristic of a hero, as courage, bravery, fortitude, unselfishness, etc.; the display of such qualities.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)
Word Usage
""'Few nobler heroisms,' says a well-known writer, long occupied on this subject, 'at bottom, perhaps, _no nobler heroism_, ever transacted itself on this earth; and it lies as good as lost to us, overwhelmed under such an avalanche of human stupidities as no heroism before ever did."