Tribadism is a lesbian sexual act in which a woman rubs her vulva against her partner's vulva or another part of her partner's body for sexual stimulation. It is also known as scissoring, a sex position in which the women intertwine their legs and rub their vulvas together, or as tribading or tribbing.
- Jones, Mia (December 22, 2009). "All lesbians are good at sports, and other misconceptions". AfterEllen.com.