köken: Certainly inherited from the Proto-Indo-European word for "sun," which might have had a form like *sóh₂wl̥ (see there for alternative reconstructions). The development of the Latin form and the exact reconstruction of the PIE word is disputed. The only attested cognate within the Italic branch is Oscan 𐌔𐌖𐌋𐌄𐌉𐌔 (suleis) (genitive singular), which may represent underlying *sōl or *sūl. In the former…
aile: sōlāris, sōlārium, *sōliculum
Soles occidere et redire possunt / nobis cum semel occidit brevis lux / nox est perpetua una dormienda
Fulsere quondam candidi tibi soles / cum ventitabas quo puella ducebat / amata nobis quantum amabitur nulla.