Stack endless bricks (4)

I believe the answer is:

rick

'stack' is the definition.
(rick is a kind of stack)

'endless bricks' is the wordplay.
'endless' means to look at the middle letters.
The centre of 'bricks' is 'RICK'.

(Other definitions for rick that I've seen before include "Strain neck" , "Stack, of hay say" , "Sprain; hay pile" , "Haystack; sprain" , "Straw stack" .)

I've seen this clue in The Telegraph.

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