twist-off
Of a closure for a container, especially a bottlecap, that is intended to be removed…Of a closure for a container, especially a bottlecap, that is intended to be removed by twisting and pulling off by hand, without need of a bottle opener.
Dictionary text adapted from Wiktionary (Wiktionary contributors, CC BY-SA 4.0) and Open English WordNet / Princeton WordNet (CC BY 4.0, WordNet License); shared under CC BY-SA 4.0. Example sentences and recordings are credited where they appear.