n. the name of a garage-punk rock band based in Oakland, California.
<To fill things out, XBXRX have also included a limited assortment of electronic bweeEEows and swwsssshhhs here and there. —Spencer Owen, Pitchfork Media.>
Xt!.
n. “a language spoken by a race of insectoid aliens. This language has no vowels and all the ‘consonants’ are click-like sounds” (Adam Walker, “Languages of the Commonwealth”).
xxx.
adj. of an adult nature; erotic; hardcore (such as a film with graphic sexual content).
<Of course, it would be much easier to forget He Who Shall Remain Nameless and move on if I stopped having XXX-rated dreams about him. —Megan McCafferty, Second Helpings: A Novel.>
Xxx.
n. the name of a character in the novel The Martian Chronicles by Ray Bradbury.
<Mr. Xxx peered seriously into his file. He went “Tsk” and shut the file solemnly. —Ray Bradbury, The Martian Chronicles.>