Crossword Genius

Wimp draws naval officer doing handstand? (7)

Ross

I believe the answer is:

milksop

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

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for milksop that I've seen before include "Cissy (informal) -- limps OK (anag)" , "Effeminate person" , "Weak or effeminate man" , "Feeble and effete person" , "Namby-pamby" .)

I've seen this clue in The Times.
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