snap-open
adjectiveUK /ˈsnæpˌəʊpən/
US /ˈsnæpˌoʊpən/
Something that opens quickly with a small click.
She carried a snap-open purse to the party.
OTHER MEANINGS
2. A container or case designed to open suddenly with a snapping sound.
He kept his coins in a snap-open tin.
3. Able to be opened by a quick snapping motion of the fingers or wrist.
The snap-open lighter was easy to use outdoors.
4. A type of folding knife that opens rapidly with a flick.
The camper showed off his snap-open pocket knife.