from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A device used to train the hand muscles used in playing the piano, in order to acquire advanced techniques such as legato
from the GNU version of the Collaborative International Dictionary of English
- n. A dumb gymnastic apparatus for training the hands of pianists and organists, as to a legato touch.
from The Century Dictionary and Cyclopedia
- n. A soundless apparatus for the gymnastic training of the hands of organists and pianists, and for the acquirement of a strictly legato touch.
techni- + -phone (Wiktionary)