trombone
['tank, army tank, armored combat vehicle, armoured combat vehicle', 'paintbrush', 'loudspeaker, speaker, speaker unit, loudspeaker system, speaker system', 'chain mail, ring mail, mail, chain armor, chain armour, ring armor, ring armour', 'ping-pong ball', 'stethoscope', 'bolo tie, bolo, bola tie, bola']