old woman
姥 centers on an elderly woman, often with a nuance of a grandmotherly or aged female figure.
姥 combines 女 (woman) with 老 (old), directly expressing an old woman.
A woman 女 beside the character for old 老: together they make an old woman.
For ボ, imagine an old woman with a bow in her hair: bow -> ボ, and the old woman wears it proudly.
elderly woman
mountain witch; yamauba
double weeping rosebud cherry (Prunus pendula)
practice of abandoning old people, usu. women
mountain where old people were abandoned (according to legend)
faded beauty
Inversidens brandti (species of freshwater mussel)
uba lily (Cardiocrinum cordatum)
ubame oak (Quercus phillyraeoides)
Sakhalin surf clam (Pseudocardium sachalinense)
Aspasma minima (species of clingfish)
(Japanese) Darby and Joan