Crossword Genius

As the BBC initially unprepared for broadcast, they could land in hot water (9)

Ross

I believe the answer is:

bathcubes

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

'they could land in hot water' is the definition.
(bathcubes are dropped in a bath)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

I've seen this clue in The Times.
Want a hint initially instead of a full solution? Install my app