be the cat's meow
US /bi ðə kæts maʊ/
UK /bi ðə kæts maʊ/

1.
la bomba, la caña, lo mejor de lo mejor
to be excellent or highly desirable; to be the best of its kind
:
•
Her new sports car is really the cat's meow.
Su nuevo coche deportivo es realmente la bomba.
•
Everyone thought his invention was the cat's meow.
Todos pensaron que su invento era la caña.