penny whistle
US /ˈpen.i ˌwɪs.əl/
UK /ˈpen.i ˌwɪs.əl/
1.
a small, inexpensive woodwind instrument, typically with six finger holes, producing a high, clear sound.
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He played a lively jig on his penny whistle.
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The sound of the penny whistle is often associated with Irish folk music.