Girl With Pigtails

In the context of hairstyles, the usage of the term pigtail (twintail or twin tail) shows considerable variation. According to most dictionaries, a pigtail is a braid of tightly woven hair. The name is based on the short, thin and kinked tail of a pig, referring to the way a short, tight braid may stand out from the scalp through asymmetric tension of the weave. However, the term may also apply to a single braid regardless of length or tension, focusing instead on the knobby texture of the overall structure.
Alternately, the plural term pigtails may be applied to a pair of two braids or ponytails on opposite sides of the head. In British English the term "pigtail" or "pigtails" refers specifically to bunched hair that has been plaited. Unplaited pairs are "bunches" and a single bunch, regardless of position on the head, is a "ponytail".