Slang — jargon (5)
I believe the answer is:
lingo
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">slang</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(lingo can mean slang or jargon)</span><br/ ><br/ >'<span class="explanation-format__original">jargon</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ ></span>
(Other definitions for lingo that I've seen before include "Johnny Foreigner speaks one" , "Parlance" , "Log in (anag.)" , "Foreign language or dialect: jargon" , "special words" .)