ma·cho (mä'chō) adj. Characterized or motivated by machismo: "He was a mindless activist, a war lover, who found macho relish in danger and felt driven to prove manhood by confrontation"(Arthur M. Schlesinger, Jr.) n.
pl.ma·chos
Machismo.
A person characterized by or exhibiting machismo.
[Spanish, male, from Latin masculus; see masculine.] ma'cho·ism n.
MA·CHO (mä'chō) n.
pl.MA·CHOs Any of various massive dark objects, such as a brown dwarf star or large planet, in the outermost regions of a galaxy, that may explain the observed anomalous rotation of most galaxies.
MACHO (mä'chō) Pronunciation Key
Short for massive astrophysical compact halo object.Any of various massive dark objects, such as a brown dwarf star, black hole, or large planet, found in a galactic halo. MACHOs are thought to make up at least a part of the dark matter that apparently pervades much of the universe.