Less than a tiny box (3)

I believe the answer is:

tin

'box' is the definition.
(I've seen this in other clues)

'less than a tiny' is the wordplay.
'less than' means to remove the last letter (not the full word).
'tiny' with its final letter taken off is 'TIN'.

(Other definitions for tin that I've seen before include "With copper, makes bronze" , "Metal in Argentina" , "Silvery-white metallic element" , "1 down, symbol Sn" , "Atomic number 50" .)

I've seen this clue in the Evening Standard.

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