(noun & adj) a person who identifies themselves as masculine, whether it be physically, mentally or emotionally. ‘Butch’ is sometimes used as a derogatory term for lesbians, but is also be claimed [..]

"tough youth," 1902, first attested in nickname of U.S. outlaw George Cassidy (1866-?), probably an abbreviation of butcher (n.). Sense of "aggressive lesbian" is 1940s.

Slang for acting masculine, especially in regard to lesbians and gay men. May be considered offensive.

Adj. 1. Tough looking, masculine. 2. A masculine lesbian.

(n) (slang) offensive term for a lesbian who is noticeably masculine(adj) used of men; markedly masculine in appearance or manner(adj) (of male or female homosexuals) characterized by stereotypically [..]

A gender expression that fits societal definitions of masculinity. Usually used by queer women and trans people, particularly by lesbians. Some consider “butch” to be its own gender identity.

Describes gender expressions and/or social and relationship roles that are perceived as being masculine, or refers to a person who embodies these qualities. Might be trans, but not necessarily. (QMUNITY)

(slang,originally|_|Polari) Very masculine, with a masculine appearance or attitude. * '''1998''', Kath Weston, [https://books.google.com/books?id=UZ-IHCxcqHAC&pg=PT7&dq=%22more+butch%22&hl=en&sa=X [..]

A male nickname

a lesbian who adopts the dress and mannerisms of a man. She often assumes the more masculine role in a relationship.