The American Heritage® Dictionary of the English Language, 4th Edition
n. A Japanese musical instrument similar to a zither, having usually 13, but sometimes as few as 1 or as many as 17, silk strings stretched over an oblong box.
n. a Japanese stringed instrument having numerous strings, usually seven or thirteen, that are stretched over a convex wooden sounding board and are plucked with three plectra, worn on the thumb, index finger, and middle finger of one hand.
The Century Dictionary and Cyclopedia
n. A Japanese musical instrument, consisting of a long box over which are stretched thirteen strings of silk, each five feet in length and provided with a separate bridge. It is played with both hands, like the harp. The tuning is effected by shifting the position of the bridge, and semitones are obtained by pressing the string behind the bridge.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. Japanese stringed instrument that resembles a zither; has a rectangular wooden sounding board and usually 13 silk strings that are plucked with the fingers
Word Usage
"Young men who are unskilled in koto or fué [harp or flute] amuse themselves with tonearasoi 1 and imayo, 2 and at such a time this is entertaining."