Crossword Genius

Enterprise, say, in plot assisted those who wait (6)

Ross

I believe the answer is:

bussed

I'm a little stuck... Click here to teach me more about this clue!

'assisted those who wait' is the definition.
Although both the answer and definition are past participle verbs, I don't see how they can define each other.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Another definition for bussed that I've seen is " transported by coach".)

I've seen this clue in The Sunday Times and The Times.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.