In middle of dream ideas (4)
I believe the answer is:
amid
'in' is the definition.
'of dream ideas' is the wordplay.
'of' says the answer is hidden in the clue.
'AMID' can be found hidden inside 'dream ideas'.
'middle' is the link.
This may not be right. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for amid that I've seen before include "Among" , "Maid (anag)" , "In the centre of" , "A dim sort of preposition" , "Amongst" .)