/ˈspeɪs ˌProfessionalʊb/ a small spacecraft, without any a person travelling in it, despatched into House to create measurements and send out back again information to experts on earth , accounting and environmental benchmarks as apparent parts of software for the lessons realized from banking regulation. From the Cambridge English Corpus https://businessflightshop.co.uk/blog/what-should-you-know-before-flying-first-class/