welkin

英 ['welkɪn] 美['wɛlkɪn]

1. the apparent surface of the imaginary sphere on which celestial bodies appear to be projected

1. He danced , howled, raved , and otherwise disturbed the welkin.: 他又跳, 又吼,又叫, 使尽各种伎俩来搅扰这苍穹.