xylophone
Concise Oxford English Dictionary © 2008 Oxford University Press:
xylophone /ˈzʌɪləfəʊn/
▶noun a musical instrument played by striking a row of wooden bars of graduated length with small beaters.
– derivatives
xylophonic adjective,
xylophonist /zʌɪˈlɒfənɪst/ noun.
xylophonic adjective,
xylophonist /zʌɪˈlɒfənɪst/ noun.
'xylophone' also found in these Oxford entries:

