Make a lasting impression? (4)
I believe the answer is:
etch
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">make a lasting impression</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 etch that I've seen before include "Use acid to cut design" , "Wear away by chemical reaction" , "Engrave; fix firmly" , "Cut deeply (with acid?)" , "Draw on metal with acid" .)