Nailed it! 搞定（做得很成功）
Her presentation for the boss went really well. She totally nailed it!
A: How was your interview today?
B: Nailed it.
Nail n. 钉子
I got a flat tyre after driving over a nail.
Nail clippers 指甲剪
Nail clippers are usually made of stainless steel and used to trim fingernails or toenails.
Nail polish 指甲油
Nail polish is a coloured liquid that is painted on fingernails or toenails.
Did you catch the football match last Sunday? Man, what a nail-biter!