water park
US /ˈwɑː.t̬ɚ ˌpɑːrk/
UK /ˈwɑː.t̬ɚ ˌpɑːrk/

1.
an amusement park that features water play areas, such as swimming pools, water slides, splash pads, spraygrounds, lazy rivers, and other recreational bathing, swimming, and barefooting environments.
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We spent the whole day at the water park, enjoying the slides and wave pool.
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The new water park features a giant lazy river and several thrilling slides.