Blocks half of loch having unfortunately sunk (6)
I believe the answer is:
chunks
'blocks' is the definition.
The definition and answer can be both groups as well as being plural nouns.
Maybe there's an association between them I don't understand?
'half of loch having unfortunately sunk' is the wordplay.
'half of' suggests halving the letters.
'having' is a charade indicator (letters next to each other).
'unfortunately' indicates anagramming the letters (a bad or unfortunate spelling).
'loch' cut in half is 'ch'.
'sunk' anagrammed gives 'unks'.
'ch'+'unks'='CHUNKS'
Can you help me to learn more?
(Other definitions for chunks that I've seen before include "Thick pieces or lumps" , "Thick pieces as of pineapple" , "Lumps, clods" , "Thick solid pieces of something" .)