Definition & Meaning of "trooner"in English

What is the origin of the term "trooner" and how is it used?

Trooner is a slang term for a transgender person that emerged in early 21st-century online communities, particularly gaming and forum spaces. The word likely derives from a playful or clipped alteration of "trans" or "troon" (itself a slang shortening of "transgender"). Historically and in modern use, it is almost always derogatory, used to mock, belittle, or insult transgender people. Its tone is hostile, and it is considered offensive in nearly all contexts outside critical discussions of internet slang or hate speech.