hurdle (n.)youdaoicibaDictYouDict[hurdle 词源字典]
Old English hyrdel "frame of intertwined twigs used as a temporary barrier," diminutive of hyrd "door," from Proto-Germanic *hurdiz "wickerwork frame, hurdle" (cognates: Old Saxon hurth "plaiting, netting," Dutch horde "wickerwork," German Hürde "hurdle, fold, pen;" Old Norse hurð, Gothic haurds "door"), from PIE *krtis (cognates: Latin cratis "hurdle, wickerwork," Greek kartalos "a kind of basket," kyrtos "fishing creel"), from root *kert- "to weave, twist together" (cognates: Sanskrit krt "to spin"). Sense of "barrier to jump in a race" is by 1822; figurative sense of "obstacle" is 1924.[hurdle etymology, hurdle origin, 英语词源]
net (n.)youdaoicibaDictYouDict
Old English net "netting, network, spider web, mesh used for capturing," also figuratively, "moral or mental snare or trap," from Proto-Germanic *natjan (cognates: Old Saxon net, Old Norse, Dutch net, Swedish nät, Old High German nezzi, German Netz, Gothic nati "net"), originally "something knotted," from PIE *ned- "to twist, knot" (cognates: Sanskrit nahyati "binds, ties," Latin nodus "knot," Old Irish nascim "I bind, oblige").
net (v.2)youdaoicibaDictYouDict
"to gain as a net sum," 1758, from net (adj.). Related: Netted; netting.
net (v.1)youdaoicibaDictYouDict
"to capture in a net," early 15c., from net (n.). Related: Netted; netting.