Knight time? (4)
I believe the answer is:
yore
'knight time?' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for yore that I've seen before include "Long ago (poetic)" , "Time long past" , "Bygone time" , "Archaic word for long ago" , "Old usage for formerly, as in days of. . ." .)