Cove to squeal out loud (5)
I believe the answer is:
creek
'cove' is the definition.
(I've seen this before)
'squeal out loud' is the wordplay.
'squeal' becomes 'creak' (both can mean to make a noise).
'out loud' indicates a 'sounds like' (homophone) clue.
'creak' sounds like 'CREEK'.
'to' acts as a link.
(Other definitions for creek that I've seen before include "Small water course" , "Narrow inlet from the sea" , "Small inlet, river" , "Cove" , "Up the .....; in difficulties, and wet?" .)