Crossword Genius

One uses it single-handed (5)

Ross

I believe the answer is:

scull

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This might be a double definition.

'one' is the first definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

'it single-handed' is the second definition.
The definition suggests a singular noun which matches the answer.

'uses' acts as a link.

Can you help me to learn more?

(Other definitions for scull that I've seen before include "Small oar" , "racing shell" , "Light rowing boat" , "Row with two oars" , "A single oar" .)

I've seen this clue in the Evening Standard.
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