push-onlid
nounUK /ˈpʊʃ ɒn lɪd/
US /ˈpʊʃ ɑːn lɪd/
A lid you push down to close a container.
She pushed the push-onlid onto the jar to keep the cookies fresh.
OTHER MEANINGS
2. A cover that fits by pressing it down, not by screwing it on.
The push-onlid stayed tight even when the box tipped over.
3. The top part of a food storage tub that clicks into place.
He lost the push-onlid, so the leftovers dried out.
4. A lid designed to be removed by lifting or prying, not twisting.
Use the push-onlid for the paint can so it seals fast.