Where does “pelirrojito” come from?

pelirrojito (Spanish) comes from Spanish pelirrojo, from Spanish pelo, from Latin pīlus, from Latin pīlum, from Proto-Italic pistlom, from Proto-Indo-European pis-tlo-, from Proto-Indo-European peys- — to grind, to crush.

pelirrojito (Spanish): Diminutive of pelirrojo