One little bit, note (3)

I believe the answer is:

jot

I believe this is a triple definition!

'one little' is the first definition.
(thesaurus)

'bit' is the second definition.
(both can mean a small amount)

'note' is the third definition.
(I know that jot is a type of note)

(Other definitions for jot that I've seen before include "Write hurriedly" , "Small piece - note" , "Set down briefly" , "Write a short note" , "Write hastily - a very small amount" .)

I've seen this clue in the Evening Standard.

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