- skyW2S2 [skaı] n plural skies[Date: 1200-1300; : Old Norse; Origin: 'cloud']1.) [singular, U]the space above the earth where clouds and the sun and stars appear▪ The sky grew dark, and a cold rain began to fall.▪ A shooting star sped across the sky.in the sky▪ There wasn't a cloud in the sky.blue/black/grey etc sky▪ The sun rose higher in a clear blue sky.clear/cloudy/dark etc sky▪ Robyn lay on her back looking up at the cloudless sky.▪ under a slightly overcast sky (=with clouds)night/morning/summer etc sky▪ The evening sky was darkening as I made my way home.▪ She looked out over the rooftops and the open sky .2.) skies [plural]a word meaning 'sky', used especially when describing the weather or what the sky looks like in a place▪ a land of blue skies and warm sunshine▪ The skies were overcast, and it was chilly and damp.3.) the sky's the limitspoken used to say that there is no limit to what someone can achieve, spend, win etc▪ Francis believes the sky's the limit for the young goalkeeper.
Dictionary of contemporary English. 2013.