solid; massive, large; hunky, dishy
“Es el hombre más macizo que mis ojos han contemplado.” — He is the hunkiest man that my eyes have contemplated.
Inherited from Old Spanish maçiço (mid-14th c.), from a hypothetical earlier *massizo, from Vulgar Latin *massīcius, from Latin massa (“mass”), from Ancient Greek μᾶζα (mâza, “barley cake”); see links for more. The sense “massif” is a semantic loan from French massif, which is cognate.