#sound_hole__soundhole  a hole in a soundboard (as of a violin) designed to resonate with the tones
  supertype:  #hole  an opening deliberately made in or through something
  part of:  #soundboard__sounding_board  (music) resonator consisting of a thin board whose vibrations reinforce the sound of the instrument
     part of:  #forte-piano__fortepiano__piano__pianoforte  a stringed instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds
     part of:  #stringed_instrument  a musical instrument in which taut strings provide the source of sound

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