- adjective behaving in a way that is thought to be typical of a man
(written as MACHO)One proposed form which dark matter in galaxies could adopt, MACHOs would be planet-sized objects in deep space. They could be observed by the gravitational lensing effect they might have on light from distant stars.
- acronym forMassive Compact Halo Object
(written as MACHO)
- adjective assertively male, aggressively masculine. The word is a direct borrowing from Spanish in which it means male, particularly in an animal context, hence virile.