thighyoudaoicibaDictYouDict[thigh 词源字典]
thigh: [OE] The thigh is etymologically the ‘plump’ part of the leg. Together with Dutch dij, it evolved from a prehistoric Germanic *theukham. This went back to Indo-European *teuk-, *tauk-, *tuk-, which also produced Lithuanian táukas ‘fat’. And these in turn were extensions of the base *tu- ‘swell’, source of English thousand, thumb, tumour, etc.
=> thousand, thumb, tumour[thigh etymology, thigh origin, 英语词源]
thigh (n.)youdaoicibaDictYouDict
Old English þeoh, þeh, from Proto-Germanic *theuham (cognates: Old Frisian thiach, Old Dutch thio, Dutch dij, Old Norse þjo, Old High German dioh), probably literally "the thick or fat part of the leg," from PIE *teuk- from root *teue- (2) "to swell" (cognates: Lithuanian taukas, Old Church Slavonic tuku, Russian tuku "fat of animals;" Lithuanian tukti "to become fat;" Avestan tuma "fat;" Greek tylos "callus, lump," tymbos "burial mound, grave, tomb;" Old Irish ton "rump;" Latin tumere "to swell," tumulus "raised heap of earth," tumidus "swollen;"tumor "a swelling;" Middle Irish tomm "a small hill," Welsh tom "mound").