Major currency (4)
I believe the answer is:
euro
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">major currency</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 euro that I've seen before include "jumper" , "Vatican currency" , "French monetary unit" , "Large kangaroo" , "The new international money unit" .)