Tucked up (4)
I believe the answer is:
abed
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">tucked up</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for abed that I've seen before include "Bead (anag.)" , "laid up" , "going to sleep?" , "Having not got up" , "having a lie-in?" .)