Crossword Genius

Fruit grasped by agile monkey (5)

Ross

I believe the answer is:

lemon

I'm a little stuck... Click here to teach me more about this clue!

'fruit' is the definition.
(I know that lemon is a fruit)

'grasped by agile monkey' is the wordplay.
'LEMON' is hidden within the letters.
However, I'm unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for lemon that I've seen before include "Fruit high in vitamin C" , "Something worthless" , "Fruit - as an answer it's unsatisfactory" , "Sharp-tasting fruit" , "Pulsate" .)

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