What does "heroic" mean?

Additional senses

1. 2.(Sculpture & Painting) Larger than life size, but smaller than colossal; -- said of the representation of a human figure. Heroic Age, the age when the heroes, or those called the children of the gods, are supposed to have lived. -- Heroic poetry, that which celebrates the deeds of a hero; epic poetry. -- Heroic treatment or remedies (Med.), treatment or remedies of a severe character, suited to a desperate case. -- Heroic verse (Pros.), the verse of heroic or epic poetry, being in English, German, and Italian the iambic of ten syllables; in French the iambic of twelve syllables; and in classic poetry the hexameter.