Are too small to pick up (5)

I believe the answer is:

pinch

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'pick up' is the definition.
(thesaurus)

I don't understand the rest of the clue.

(Other definitions for pinch that I've seen before include "Squeeze painfully" , "appropriate" , "Steal; small quantity" , "Pilfer" , "Steal (informal); squeeze" .)

I've seen this clue in the Evening Standard.

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