bikotsu sc=Jpan japanista suomeksi

尾骨 びこつ, bikotsu sc=Jpan, 尾骶骨 びていこつ, biteikotsu sc=Jpan, 尾閭骨 びりょこつ, biryokotsu sc=Jpan

1. häntäluu

2. coccyx professional term; häntäluu common language term