cloud-built
Cloud"-built, a. Defn: Built of, or in, the clouds; airy; unsubstantial; imaginary. Cowper. So vanished my cloud-built palace. Goldsmith.
Cloud"-built, a. Defn: Built of, or in, the clouds; airy; unsubstantial; imaginary. Cowper. So vanished my cloud-built palace. Goldsmith.