Way or system (6)
I believe the answer is:
method
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">way</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(method is a kind of way)</span><br/ ><br/ >'<span class="explanation-format__original">system</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for method that I've seen before include "Style of technique, as of some actors" , "Type of acting" , "Systematic way of doing something" , "Way of doing something, perhaps in madness" , "'Means, way of achieving (6)'" .)