Fasten firmly (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fasten firmly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rivet that I've seen before include "Arrest" , "Bolt for metal plates" , "Engross attention" , "Metal pin; engross" , "Heavy fastening pin with head and hammered end" .)
(Other definitions for secure that I've seen before include "Incapable of being tampered with" , "Peg" , "Free from danger or risk" , "Safe; make fast" , "Firmly in place - free from danger" .)