/mah"choh/ , adj., n., pl. machos .
adj.
1. having or characterized by qualities considered manly, esp. when manifested in an assertive, self-conscious, or dominating way.
2. having a strong or exaggerated sense of power or the right to dominate.
n.
3. assertive or aggressive manliness; machismo.
4. an assertively virile, dominating, or domineering male.
[ 1925-30, Amer. masculus; see MASCULINE ]