Final answer:
The "Xuc" name comes from the Salvadoran woodwind instrument called the flute.
Step-by-step explanation:
The "Xuc" name comes from the Salvadoran woodwind instrument called the flute. In medieval times, the flute was made of wood and could be side-blown or end-blown. The flute's predecessor, the pan flute, was also popular during that period. It had wooden pipes graduated in length to produce different pitches.