Sally of timeless mockery? (4)
I believe the answer is:
aunt
'sally' is the definition.
(Aunt Sally, traditional game)
I don't understand the rest of the clue.
(Other definitions for aunt that I've seen before include "Family relative" , "Close relative" , "Tuna gone bad for the relative" , "Charley's in play?" , "Parent's female sibling" .)