A unicorn in swinging is a term used to describe a single woman who is open to engaging in sexual activities with couples. This term comes from the idea that such women are rare and highly desired in the swinging community. Unicorns are often sought after by couples because they can add an extra element of excitement and pleasure to their sexual encounters. These women are typically bisexual or open to experimenting with same-sex activities and enjoy the freedom and exploration that swinging offers. Unicorns play a unique role in swinging dynamics, providing an opportunity for couples to explore their fantasies and enhance their sexual experiences together.