Take note of (4)
I believe the answer is:
heed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">take note of</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 heed that I've seen before include "Take account of" , "Obey" , "Attend to, mind" , "Listen to carefully" , "Careful attention" .)