Welshman maybe removing hat, revealing ear? (5)
I believe the answer is:
organ
'ear?' is the definition.
(ear is a kind of organ)
'welshman maybe removing hat' is the wordplay.
'welshman maybe' becomes 'morgan' (common Welsh name).
'removing hat' means to remove the first letter.
'morgan' with its first letter removed is 'ORGAN'.
'revealing' is the link.
(Other definitions for organ that I've seen before include "House journal" , "Instrument with stops" , "Mouthpiece" , "Body part - wind instrument" , "Medium; body part" .)