sprainyoudaoicibaDictYouDict[sprain 词源字典]
sprain: see express
[sprain etymology, sprain origin, 英语词源]
sprain (n.)youdaoicibaDictYouDict
c. 1600, of uncertain origin. The verb is attested from 1620s. A connection has been suggested to Middle French espraindre "to press out," from Latin exprimere [Klein, Century Dictionary], but the sense evolution is difficult. Related: Sprained; spraining.