X

[x-double minus]{adj.}, {slang}, {informal} Extremely poorly done, bad, inferior (said mostly about theatrical or musical performances). •/Patsy gave an x-double minus performance at the audition and lost her chance for the lead role./

[X marks the spot] An indication made on maps or documents of importance to call attention to a place or a feature of some importance. •/The treasure hunter said to his companion, "Here it is; X marks the spot."/

[x-rated]{adj.}, {slang}, {informal} Pertaining to movies, magazines, and literature judged pornographic and therefore off limits for minors. •/My son celebrated his 21st birthday by going to an x-rated movie./

[x-raying machine]{n.}, {slang}, {citizen’s band radio jargon} Speed detection device by radar used by the police. •/The smokies are using the x-raying machine under the bridge!/