Sailor’s prominent feature (6)

I believe the answer is:

popeye

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'sailor's' is the definition.
(I have seen 'comic sailor' mean 'popeye' so perhaps 'sailor' could also mean 'popeye')

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for popeye that I've seen before include "Cartoon sailor (showing amazement?)" , "Cartoon spinach eater" , "The Sailor Man" , "mariner?" , "Spinach and Olive Oyl lover" .)

I've seen this clue in The Guardian.

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