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In practice, Rod came round and wakened one up (3)

Ross

I believe the answer is:

use

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

'in practice' is the definition.
'use' can be an answer for 'practice' (use is a kind of practice). I'm unsure of the 'in' bit.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for use that I've seen before include "consume; exploit" , "Employment; utilise" , "Take drugs regularly" , "Put into service, do something with" , "Put to a particular purpose" .)

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