Keeper (8)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">keeper</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for guardian that I've seen before include "Defender, protector" , "One in loco parentis" , "Daily newspaper" , "Curator" , "Platonic leader" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">keeper</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that keeper can be written as custodian)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for custodian that I've seen before include "Protector/guardian (of something)" , "Protector" , "Guardian" , "One takes care of" , "museum keeper" .)