Crossword Genius

Keep under control with a fair amount of care heading for the sun with flying Scotsman (8)

Ross

I believe the answer is:

restrain

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

'keep under control' is the definition.
(I've seen this before)

'fair amount of care heading for the sun with flying scotsman' is the wordplay.
I cannot really understand how this works, but
'amount' could be 'rest' (rest is a kind of amount) and 'rest' is found within the answer.
'sun' could be 'ra' (ancient Egyptian sun god) and 'ra' is located in the answer.
The remaining letters 'in' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

'with a' acts as a link.

Can you help me to learn more?

(Other definitions for restrain that I've seen before include "Keep under control" , "bar" , "Manacle" , "Limit" , "In arrest (anagram)" .)

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