Simply a bow tied into the hair in some way. It will often be used by girls with long hair to tie back a ponytail or twintails. It will also be used to keep loose hair back without a tail or as simple decoration.
The following tags are aliased to this tag: hair_bows (learn more).
This tag implicates bow (learn more).
The following tags implicate this tag: multiple_hair_bows (learn more).