The term 'pig tail' refers to a hairstyle in which the hair is gathered into a single braid or plait and allowed to hang down the back. The crossword solutions for this term are STY, which stands for 'STYLE', and LET, which stands for 'letting'. This hairstyle is often seen on young girls, and is usually achieved by brushing the hair straight back and then braiding it. It can also be done with two braids, one on each side of the head.