Piece of fencing lacking colour (4)

I believe the answer is:

pale

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'lacking colour' is the definition.
(I've seen this before)

'piece of fencing' is the wordplay.
'piece' becomes 'p' (abbreviation for Pawn).
'of fencing' becomes 'ale' (I am not sure about this - if you are sure you should believe this answer much more).
'p'+'ale'='PALE'

Can you help me to learn more?

(Other definitions for pale that I've seen before include "Feeble - wan" , "Ashen" , "heraldic stripe" , "Lightly coloured" , "Very light coloured" .)

I've seen this clue in The Telegraph.

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