πολιός

1. gray, grizzled, grisly , of wolves, of iron, of the sea, (Iliad by Homer)

2. mostly of hair, gray or hoary from age, (Homer); πολιοί gray-haired men , (Odyssey by Homer), etc.:—;absolute, αἱ πολιαί (i.e. τρίχες); (Pindar); ἅμα ταῖς πολιαῖς κατιούσαις as the gray hairs come down (i.e. from the temples to the beard), (Aristophanes Comicus); π. δάκρυον ἐμβαλών an old man's tear, (Euripides)

3. metaphorically hoary, venerable , (Euripides)

4. like λευκός, bright, clear, serene , (Hesiod) (ML)