单词	pitch pipe
释义	pitch pipe noun : a small reed pipe or flue pipe producing one or more tones to establish the pitch in singing or in tuning an instrument Example Sentences Recent Examples on the Web Then the woman pulls out a pitch pipe and blows a note. Los Angeles Times, 23 May 2022 One member blew a single note on a pitch pipe, and with that one note, the chorus launched into four-part harmony singing Christmas classics. Carson Gerber, The Seattle Times, 24 Dec. 2017 Word History First Known Use 1685, in the meaning defined above
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