Find a very small amount (5)

I believe the answer is:

trace

I believe this clue is a double definition.

'find' is the first definition.
(I know that trace is a more specific form of find)

'a very small amount' is the second definition.
(I've seen this before)

(Other definitions for trace that I've seen before include "Make a copy using transparent paper" , "Cater (anag.)" , "suspicion" , "Skimpy garment" , "Evidence" .)

I've seen this clue in The Globe and Mail.

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