Loos' Lee (7)
I believe the answer is:
lorelei
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">loos' lee</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 lorelei that I've seen before include "Jerk" , "Legendary siren who lured Rhine boatmen to destruction" , "Fatal nymph of the Rhine" , "Legendary siren and rock in the R Rhine" , "High rock in the Rhine gorge" .)