The Spanish and Italian word "cielo" translates to "sky" in English. It is a masculine noun. Its plural form in Italian is "cieli," while the same form in Spanish is "cielos."
As in English, in Spanish and Italian the word for "sky" is a rich source of metaphors and idioms. For example, Italians say "toccare il cielo con un dito," which literally means "to touch the sky with a finger" and is similar in meaning to the English phrase "walking on air." Spanish speakers say "ver el cielo abierto," which literally translates to "to see the open sky" and means "to see a way out of something."