Always appearing in these verses (4)
I believe the answer is:
ever
'always' is the definition.
(synonyms)
'in these verses' is the wordplay.
'in' indicates a hidden word.
'EVER' is hidden within 'these verses'.
'appearing' is the link.
(Other definitions for ever that I've seen before include "Continuously" , "To the end of time" , "Eternity" , "Possibly" , "Always, at any time" .)