reed organ
US /ˈriːd ˌɔːr.ɡən/
UK /ˈriːd ˌɔːr.ɡən/
1.
a musical instrument similar to an organ, in which the sound is produced by air blown through free reeds
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The old church had a beautiful reed organ that filled the sanctuary with its rich sound.
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Unlike pipe organs, reed organs are generally smaller and more portable.