Seeing something, I cry out loud (7)
I believe the answer is:
eyeball
'seeing' is the definition.
(thesaurus)
'i cry out loud' is the wordplay.
'i' becomes 'eye' (I've seen this in other clues).
'cry out' becomes 'bawl'.
'loud' shows a homophone (sound like).
'bawl' sounds like 'ball'.
'eye'+'ball'='EYEBALL'
'something' is the link.
This may not be right. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for eyeball that I've seen before include "pupil found here" , "Observe closely" , "Organ of sight" , "Spherical optical organ" , "Stare at closely; organ" .)