push-and-turn operation; depress and rotate
Technical term for a mechanism that requires pressing down while turning, commonly used for child-resistant caps, gas stoppers, and some spark plugs.
This medicine cap is a push-and-turn type, making it hard for children to open.
For the gas stopper, push and turn it to release the lock, then turn.
Compound of 押し (push) + 回し (turn), from the verbs 押す and 回す. The exact historical derivation is uncertain, but the word transparently describes the action.