Block arrived the wrong way round? (5)
I believe the answer is:
ingot
'block' is the definition.
(I know that ingot is a type of block)
'arrived the wrong way round?' is the wordplay.
'arrived' becomes 'in' (I've seen this in other clues).
'the wrong way round?' becomes 'got' (I can't justify this - if you can you should believe this answer much more).
'in'+'got'='INGOT'
Can you help me to learn more?
(Other definitions for ingot that I've seen before include "Gold Stick" , "Piece of precious metal" , "Mass of precious metal" , "Mass of metal, especially gold or silver" , "Block of cast metal" .)