hecatomb
/ˈhekətuːm/noun
1- (in ancient Greece or Rome) a great public sacrifice, originally of a hundred oxen（古希腊或古罗马）大献祭; （原为献祭百牛的）百牲祭。
1.1
- figurative an extensive loss of life for some cause〈喻〉大死难; 大屠杀。
词源
late 16th cent.: via Latin from Greek hekatombē （from hekaton 'hundred' + bous 'ox'）.