Rower using this out at regatta initially (3)

I believe the answer is:

oar

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'rower' is the definition.
(I've seen this in another clue)

'this out at regatta initially' is the wordplay.
'this out at' becomes 'oa' (this might be a standard abbreviation of which I'm unaware).
'initially' suggests taking the first letters.
The initial letter of 'regatta' is 'r'.
'oa'+'r'='OAR'

'using' acts as a link.

Can you help me to learn more?

(Other definitions for oar that I've seen before include "Pole for rowing" , "spoon?" , "Crew member" , "Manual boat propeller" , "Propelling pole" .)

I've seen this clue in The Sun.

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