cat-o’-nine-tails
noun/ˌkæt ə ˈnaɪn teɪlz/
/ˌkæt ə ˈnaɪn teɪlz/
[singular]- a whip made of nine strings with knots in them, that was used to punish prisoners in the past
九尾鞭（用九条带结的细绳编成，旧时鞭打囚犯用） - He was flogged with a cat-o’-nine tails.
他被鞭打了九尾尾巴。
- He was flogged with a cat-o’-nine tails.