Definition of pipe organ in US English:
 pipe organ
nounˈpīp ˌôrɡənˈpaɪp ˌɔrɡən
see organ (sense 2)
 Example sentencesExamples
-  Then, as we took our seats, the church was filled with the sound of music from a beautiful pipe organ.
 -  People jump up from behind the pews, and a fake wall flips around to reveal a kindly organist at her pipe organ.
 -  When extended forward, the shell could frame a 120-piece full symphony orchestra, a 300-member chorus, and a pipe organ.
 -  The Dance of the Sugar Plum Fairy was given a piquant performance, proving itself a wonderful display piece for a grand pipe organ.
 -  Their makers claim that anything a pipe organ can do an electronic organ can do at a fraction of the cost.