Half a dime (6)
I believe the answer is:
nickel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">half a dime</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for nickel that I've seen before include "US five cent piece" , "Element; five cents in US" , "Metallic element, Ni" , "5c coin" , "Coin worth half a dime" .)