Crossword Genius

One winding up thread’s beginning with cylinder (7)

Ross

I believe the answer is:

troller

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

'one winding up thread's' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'beginning with cylinder' is the wordplay.
'beginning' becomes 'ter' (I can't justify this - if you can you should give a lot more credence to this answer).
'with' means one lot of letters goes inside another.
'cylinder' becomes 'roll' (roll is a kind of cylinder).
'ter' enclosing 'roll' is 'TROLLER'.

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