<p><strong>noun</strong></p><ul><li>the act of a person or thing that kills.</li><li>the total game killed on a hunt.</li><li>Informal. a quick and unusually large profit or financial gain: We would all like to win the lottery or make a killing in the stock market.</li></ul><p><strong>adjective</strong></p><ul><li>fatal;</li><li>deadly: Tuberculosis was a killing disease well into the 20th century, and society found itself with few remedies.</li><li>exhausting: An ever-expanding workload is imperceptible at first, but eventually we're operating at a killing pace.</li><li>Informal. irresistibly funny.</li><li>Slang. very attractive or fascinating: The actress is known for her outstanding beauty and killing smile.</li></ul>