char·ley horse
noun/ˈtʃɑːli hɔːs/
/ˈtʃɑːrli hɔːrs/
[usually singular] (North American English, informal)- 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)
抽筋（=当身体特定部位的肌肉收缩时突然疼痛，通常是由寒冷或运动过多引起） - 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. - Ow! I just got a charley horse in my leg.