Meaning of "It's the cat's meow"

[Susan J]

English Language Tests, Intermediate level

ESL/EFL Test #279 "English Slang Idioms (1)", question 7

That car is the nicest one on the market. It's the cat's ........., alright!

(a) purr
(b) paw
(c) meow
(d) nip

English Language Tests, Intermediate level

ESL/EFL Test #279 "English Slang Idioms (1)", answer 7

That car is the nicest one on the market. It's the cat's meow, alright!

Correct answer: (c) meow

Your answer was: incorrect
That car is the nicest one on the market. It's the cat's purr, alright!
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Would please tell me the means of "It's the cat's meow"
Thanks
Susan J

[Linda]

Hi Susan J,
The cat's meow refers to high quality products or services - something that is exceptional.
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[Kati Svaby]

Hi,

It's cat pyjamas.
It's cat's whisker.
It's cat's miaw.

are the synonims of your sentence.