
Whereas the Latin for pale (palleō, I blanch) gives us pallor and pallid and callid in the sense of callousness (tough-skinned) has its roots in
callus with the same meaning,
callid derived from the Latin term calidus (caleō, I glow) is a special and rare adjective signifying a creature (usually a cow or dog but could also be used for a person with a singular white shock of hair) with a spot, specifically a star-shaped one, in the centre of their forehead.