skyscraper UK /ˈskaɪˌskɹeɪp.ə(ɹ)/US /ˈskaɪˌskɹeɪpɚ/ noun3 •A very tall building with a large number of floors.The fact that land is a commodity of unlimited extent in America, together with the now appreciated fact that most high buildings have been economic failures, spell the doom of the skyscraper concept. — 1872 •(figurative) Anything very tall or high.It was no surprise to see Hanley bat a skyscraper out to left. — 1920 •(no longer used) A small sail atop a mast of a ship; a triangular skysail.Skyscraper. A name given to a skysail when it is triangular. — 1880 formsskyscrapers