Eld (4)
I believe the answer is:
yore
'eld' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yore that I've seen before include "Yesteryear" , "Long ago (literary)" , "Archaic word for long ago" , "Old usage for formerly, as in days of. . ." , "Long ago (poetic)" .)