waterproof case
- noun
- /ˈwɔːtərpruːf keɪs/
- This is a combination of a folding board on which you put your crease-less shirt, and a high-strength, lightweight, waterproof case.
Examples
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On a full charge, it can reportedly run for a couple of hours, and you'll need to get yourself a waterproof case if there's a chance it will get wet.
Blog text (14) -
If you want to shoot photos in or under the water, you must have a waterproof case for your camera.
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The Deluxe Kit comes in a tough, waterproof case that didn't break when I dropped it.
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You should get a waterproof case for your phone if you plan to take it to the beach.
How Waterproof
Surface Forms
Morphology
The meaning 'a protective container that prevents water from entering' is directly compositional from 'waterproof' (impervious to water) + 'case' (a protective container). This is a common, productive noun + noun/adj + noun compound in English and mirrors patterns in many languages, so a B1 learner who knows both constituents will readily infer the MWE's meaning.
Etymology
Waterproof case comes from a simple image of a closed case that is waterproof — like a small box or bag that keeps rain out and stops a dropped phone from getting wet. That's why waterproof case means a container made to 'keep water out' and protect what is inside.