In that experimental piece, the musician played the electric guitar with a violin bow, creating an eerie sound.

bow 是名词，指"弓"，这里特指小提琴的弓，即用来拉弦乐器的那根带有马尾毛的木杆。小提琴弓通过摩擦琴弦产生振动，从而发出声音。