Put to one side (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">put to one side</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 shelve that I've seen before include "Put on one 1 down" , "Put off indefinitely" , "Provide space for books" , "Store" , "Defer (a plan or project)" .)
(Other definitions for set apart that I've seen before include "Keep separate (for a special purpose)" , "Separated" , "specially allocated" , "Isolate" , "Isolated" .)