button

https://tts.langeek.co/read?text=YnV0dG9u&hash=2852dc15dd0fa5c4d7d9624f2b7561a9736ef38d&lang=en&cache-only=0&driver=googletts&accent=US

Here you will find the vocabulary from Unit 5 - 5D in the Solutions Pre-Intermediate coursebook, such as "operate", "button", "press", etc.