Yesteryear (4)

I believe the answer is:

yore

'yesteryear' is the definition.
(I know that yore is a type of yesteryear)

This is all the clue.

(Other definitions for yore that I've seen before include "Long ago (literary)" , "Formerly, of long ago" , "Time long ago" , "Old usage for formerly, as in days of. . ." , "Long ago (poetic)" .)

I've seen this clue in the LA Times and The Telegraph.

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