noun
a musical instrument resembling a tuba but having a wider, flaring bell and is used in marching bands
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The sousaphone is a type of brass instrument commonly used in marching bands.
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I heard that the sousaphone player in the band is really talented.
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Check out that cool sousaphone player jamming out on the field!
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The sound of the sousaphone filled the stadium like a warm hug.