Crossword Genius

Crab has its lunch dangling from the front nipper (5)

Ross

I believe the answer is:

child

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

'nipper' is the definition.
(I know that nipper can be written as child)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for child that I've seen before include "Youngster" , "Infant" , "Young human" , "Young person" , "Immature human" .)

I've seen this clue in the Sydney Morning Herald.
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