loon

US

UK

C2 高級
n. (c./u.)名詞 (可數/不可數)捕魚的潛鳥;傻瓜;瘋子
He's a loon, but he does help people
n. (c.)可數名詞潛鳥
We saw a loon swimming in the lake.
n. (c.)可數名詞瘋子
He's a bit of a loon, but he's harmless.
v.i.不及物動詞發瘋
Don't loon around in the library; be respectful.

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