What does this word mean?

This gasoline has a high octane rating.

He works as a front-end developer.

He completed the project at the last minute.

In Greek mythology, the punishment of Tantalus was to forever gaze at fruit that was out of reach.

This simple system is easy to use.

Basidiomycetes are a large group of fungi that include many types such as mushrooms and shiitake.

He won in the singles match.

This terminal block is used for electrical wiring connections.

She picked up the tambourine and kept the rhythm.