thumb piano
US /ˈθʌm ˌpiˈæn.oʊ/
UK /ˈθʌm ˌpiˈæn.oʊ/

1.
piano à pouces, kalimba
a musical instrument of African origin, consisting of a wooden board or resonator with a series of staggered metal tines that are played by plucking with the thumbs
:
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She learned to play the thumb piano, producing soothing melodies.
Elle a appris à jouer du piano à pouces, produisant des mélodies apaisantes.
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The sound of the thumb piano is often described as ethereal and calming.
Le son du piano à pouces est souvent décrit comme éthéré et apaisant.