Link, connection (5)
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">link</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that link can be written as nexus)</span><br/ ><br/ >'<span class="explanation-format__original">connection</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that nexus is a type of linkage)</span><br/ ><br/ ></span>
(Other definitions for nexus that I've seen before include "Connected series; central point" , "Link, connection" , "Connecting band" , "Bond; linked group" , "Focal point; link" .)
<span class="explanation-format__ClueExplanation">I believe this is a double definition.<br/ ><br/ >'<span class="explanation-format__original">link</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I know that tie up is a kind of attach)</span><br/ ><br/ >'<span class="explanation-format__original">connection</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ ></span>
(Other definitions for tie-up that I've seen before include "Link, connection" , "Association" , "Tether" , "Link (between companies)" , "Secure with ropes" .)