pseudonym
noun [ C ] uk/ˈsjuː.də.nɪm/ us/ˈsuː.də.nɪm/
笔名;假名
a name someone uses instead of their real name, especially on a written work
She writes under a pseudonym. 她用笔名写作。
George Orwell was a pseudonym - his real name was Eric Blair. 乔治‧奥威尔是笔名，他的真名是埃里克‧布莱尔。