CAT-O'-NINE-TAILS
Meaning of CAT-O'-NINE-TAILS in English
cat-o'-nine-tails /ˌkæt ə ˈnaɪn teɪlz/ BrE AmE noun [singular]
a whip made of nine knotted strings, used in the past for punishing people
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012