Crossword Genius

Chap concealing nothing that's burdensome (4)

Ross

I believe the answer is:

load

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'that's burdensome' is the definition.
I can't judge whether this defines the answer.

'chap concealing nothing' is the wordplay.
'chap' becomes 'lad'.
'concealing' means one lot of letters goes inside another.
'nothing' becomes 'o' (looks like zero - 0).
'lad' going around 'o' is 'LOAD'.

Can you help me to learn more?

(Other definitions for load that I've seen before include "Weight to be transported" , "Weigh down" , "Weight, source of pressure" , "Amount" , "pack" .)

I've seen this clue in the Evening Standard.
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