Definition of orchestrino in English:
orchestrino
(also orchestrine)
noun ˌɔːkɪˈstriːnəʊˌɔːkɛˈstriːnəʊ
rare, historical A keyboard instrument designed to imitate the sounds of various other instruments.
Origin
Mid 19th century; earliest use found in Encyclopaedia Britannica. From French orchestrino from orchestre + Italian -ino.