Form of greeting (9)
I believe the answer is:
handshake
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">form of greeting</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 handshake that I've seen before include "introductory offer?" , "Conventional greeting of manual kind" , "A link" , "Physical greeting" , "Conventional sort of manual greeting" .)