"They" has become a way to refer to people who identify as having nonbinary gender identities. Merriam-Webster added the new definition for the word, which reads, "used to refer to a single person whose gender identity is nonbinary," to its online dictionary in September.
Use of the word in this context has been getting more mainstream attention. Earlier this year, musician Sam Smith changed change pronouns to they/them. And Congresswoman Pramila Jayapal spoke about her gender-nonconforming child, who uses "they," during a House Judiciary Committee hearing on the Equality Act.
Other top searched words named by Merriam-Webster this year include "quid pro quo," "impeach" and "egregious."