Fare-well link (4)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fare-well link</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for thee that I've seen before include "Archaic form of 'you'" , "Quaker 'you'" , "You in the olden days" , "Old objective second person singular" , "'U'" .)