We don't have synonyms for redskirt yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are redskin, redstart and bedskirt.
(n) :
(fiction, fandom slang, rare) An unimportant or expendable female character, especially one introduced only to be killed in order to underscore the peril faced by important characters.
(n) :
(fiction, fandom slang, rare) An unimportant or expendable female character, especially one introduced only to be killed in order to underscore the peril faced by important characters.