charley horse

noun
🔊/ˈtʃɑːli hɔːs/
🔊/ˈtʃɑːrli hɔːrs/
[usually singular] (North American English, informal)
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  1. a cramp (= a sudden pain that you get when the muscles in a particular part of your body contract, usually caused by cold or too much exercise)
    • Ow! I just got a charley horse in my leg.哎唷!我的腿抽筋了。🔊🔊
    Word Originlate 19th cent.: of unknown origin.