Crossword Genius

Splendid person, solitary type with no end of skill (4)

Ross

I believe the answer is:

oner

'splendid person' is the definition.
(oner can mean a remarkable individual)

I don't understand the remainder of the clue.

(Other definitions for oner that I've seen before include "remarkable person" , "Hit" , "Remarkable thing" , "Unique person" , "A pound coin" .)

I've seen this clue in The Times.
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