Crossword Genius

Object assisting rowers, primarily? (3)

Ross

I believe the answer is:

oar

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

'object assisting rowers primarily?' is the definition.
I can't tell whether this defines the answer.

'object assisting rowers primarily?' is the wordplay.
'object' becomes 'o' (O is an example).
'primarily?' indicates taking the first letters (I've seen 'primarily' mean this).
The first letters of 'assisting rowers' is 'ar'.
'o'+'ar'='OAR'

Can you help me to learn more?

(Other definitions for oar that I've seen before include "Rower's flat blade" , "One paddling" , "Rower" , "Bladed pole" , "Use it to move a boat" .)

I've seen this clue in The Times.
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