ponytailholder
nounUK /ˈpəʊnitaɪlˌhəʊldə/
US /ˈpoʊnitaɪlˌhoʊldər/
A small band you use to tie your hair back in a ponytail.
She put a ponytailholder in her hair before going for a run.
OTHER MEANINGS
2. A stretchy fabric-covered band used to gather hair without creasing it.
He used a soft ponytailholder so his hair wouldn't get a kink.
3. Any small ring or clasp that keeps a bundle of hair together.
The dancer packed extra ponytailholders for the recital.
4. A decorative accessory worn at the base of a ponytail.
Her ponytailholder had a tiny bow on it.