Crossword Genius

Fool with yellow Caribbean dish (4)

Ross

I believe the answer is:

jerk

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'fool' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

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(Other definitions for jerk that I've seen before include "Abrupt movement" , "fool" , "Twitch" , "Pull suddenly - twerp!" , "preserved beef" .)

I've seen this clue in The Guardian.
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