dulcitone
Concise Oxford English Dictionary © 2008 Oxford University Press:
dulcitone /ˈdʌlsɪtəʊn/
▶noun a musical keyboard instrument, superseded by the celesta, in which a series of steel tuning forks are struck by hammers.
– origin C19: from L. dulcis ‘sweet’ + tonus ‘tone’.
'dulcitone' also found in these Oxford entries:

