Ben Wa ballsとは 意味・読み方・使い方

Ben Wa balls, also known as Burmese bells, Benoît balls or Geisha balls (Chinese: 阴道球; pinyin: yīndàoqiú "vagina ball", or Chinese: 内用球; pinyin: nèiyòngqiú "internal-use ball") are small, marble-sized metal balls, usually hollow and containing a small weight that rolls around—used for sexual stimulation (by insertion into the vagina or anus). Some may also be solid, or contain clappers or chimes within. Other larger versions made of plastic encasing lesser balls are called Duotone balls. They are used by inserting them into the vagina or anus and using muscles to hold them in, and movement to stimulate and vibrate.