From Longman Dictionary of Contemporary Englishpipe organˈpipe ˌorgan noun [countable]an organExamples from the Corpuspipe organ• It had a pipe organinstalled in 1924 which cost 400ドル.• In a pipe organ of quality each pipe is a carefully-designed and individually-voiced musicalinstrument which produces only one frequency of sound.• With regard to second-handvalues, a good pipe organ is a better investment than an electronic instrument.