Walk like a peacock (5)
I believe the answer is:
strut
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">walk like a peacock</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 strut that I've seen before include "Move stiffly" , "Compression member; walk stiffly" , "Supporting rod" , "Stiffening bar" , "Vain walk" .)