Birl

Birl is an identity often considered as a nonbinary gender. The word is made by mixing the words "boy" and "girl".

The term has multiple and overlapping definitions:
 * "a girl and a boy [...] a girl-boy."
 * "boyish girls [...] who enjoy riding the gender wave and don’t let their gender dictate how to look and act. Birls include the range from hetero tomboys to FTMs and everyone in between." Also includes drag kings.
 * "androgynous/boyish/masculine females and those who don't let the stereotypes surrounding their sex define who they are. Whether you're a tomboy or a butch dyke, a boi, genderqueer, or an androgyne, FTM or transgendered, or simply refuse to put a label on your identity".

In the 2018 Gender Census, one respondent identified themself as a birl.