See for myself, so to speak (3)
I believe the answer is:
eye
'see' is the definition.
(I've seen this before)
'myself so to speak' is the wordplay.
'myself' becomes 'I'.
'so to speak' shows a homophone (sound like).
'i' sounds like 'EYE'.
'for' acts as a link.
(Other definitions for eye that I've seen before include "Optical organ" , "Look at, scrutinise" , "where the pupil is seated" , "Orb" , "Good discernment" .)