mackerel skyEnglishOxford New American Dictionarymackerel sky /ˈmak(ə)rəl ˌskī, ˈmæk(ə)rəl ˌskaɪ/ ▸ noun a sky dappled with rows of small white fleecy clouds, typically cirrocumulus, like the pattern on a mackerel's back.
EnglishOxford New American DictionaryEnglishOxford New American Dictionary
EnglishOxford New American Dictionary