hurdle (v.)youdaoicibaDictYouDict[hurdle 词源字典]
1590s, "to build like a hurdle," from hurdle (n.). Sense of "to jump over" dates from 1880 (implied in hurdling). Related: Hurdled; hurdling. Hurdles as a type of race (originally horse race) with hurdles as obstacles is attested by 1836 (hurdle-race is from 1822).[hurdle etymology, hurdle origin, 英语词源]
heptathlonyoudaoicibaDictYouDict
"An athletic event, in particular one for women, in which each competitor takes part in the same prescribed seven events (100 metres hurdles, high jump, shot-put, 200 metres, long jump, javelin, and 800 metres)", 1970s: from hepta- 'seven' + Greek athlon 'contest', on the pattern of words such as decathlon.