teresyoudaoicibaDictYouDict[teres 词源字典]
"Either of two muscles passing below the shoulder joint from the scapula to the upper part of the humerus, one ( teres major) drawing the arm towards the body and rotating it inwards, the other ( teres minor) rotating it outwards", Early 18th century: modern Latin, from Latin, literally 'rounded'.[teres etymology, teres origin, 英语词源]