Xylophone n. : An instrument common among the Russians, Poles, and Tartars, consisting of a series of strips of wood or glass graduated in length to the musical scale, resting on belts of straw, and struck with two small hammers. Called in Germany strohfiedel, or straw fiddle.

Xylophone n. : An instrument to determine the vibrative properties of different kinds of wood.

Example:
Can someone who plays the Xylophone be good at the piano if they practiced?

Taxonomy
xylophone, instrument, bars, xylophone solo, xylophone player, octave, wooden bars, wood, straw, concert, rubber mallets, free encyclopedia, percussion instrument, Western-style, elementary general music, Search, evidence, Europe.

Defination from the web:
xylophone (from the Greek words ξύλον - xylon, "wood" + φωνή - phone, "voice", meaning "wooden sound") is a musical instrument in the ... For centuries, xylophone makers struggled with methods of tuning the wooden bars. ...