1) Aggressively manly 2) Aggressively virile 3) All man and then some 4) Alpha bravo 5) Assertive, virile male 6) Assertively male 7) Assertively virile 8) Brawny in manner 9) Butch 10) Chest-thumping 11) Exaggeratedly male 12) Exaggeratedly manly 13) Excessively masculine 14) Extremely masculine 15) Far from feminine 1) Butch 2) He-man 3) Male 4) Manly 5) Virile 
• (n.) The striped mullet of California (Mugil cephalus, / Mexicanus).
(Massive Astronomical Compact Halo Object) A hypothetical compact object, large numbers of which might account for a significant fraction of the dark matter in the galactic halos of large galaxies, including that of our own. If MACHOs exist they could take the form of black hole...
Ma'cho noun [ Spanish ] (Zoology) The striped mullet of California ( Mugil cephalus, or Mexicanus ). 
Macho is slang for assertively male.
noun a male exhibiting or characterized by machismo