ability to oppose the thumb; opposable thumb
thumb
ボ / おやゆび
finger, point to, indicate, put into, play (chess), measure (ruler)
シ / ゆび
vis-a-vis, opposite, even, equal, versus, anti-, compare
タイ / あいて
yonder, facing, beyond, confront, defy, tend toward, approach
コウ / む.く
sex, gender, nature
セイ / さが