Though there is the more common association with the word "Macho", similar to eagle's version, I learned that a real "Macho Man" was much different and have tried to be as much of one as possible.
As storch pointed out "macho means male "
My Father was "Macho". No, he couldn't fix a car, shoot a gun, or play any sport very well at all but his gentleness of spirit, his impeccable honesty, and the love he genuinely felt for his family and his undieing love for my mother spoke volumes of what a "real" man is. He passed away in 2000 never to be forgotten by those who knew him and the way he faced those final days of his life, knowing it wouldn't be long, will always be with me as an inspiration.
My ex father-in-law is "Macho". He taught me the value of an honest days work. He taught me to give my employer more than what he paid me for. He taught me the value of doing my best and striving to do better. He taught me punctuality and, as with my father, the love of family over one's own needs and desires.
"Macho" means these things to me.