Business bigwig, for short (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">business bigwig for short</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 exec that I've seen before include "Board member" , "CEO?" , "Businessman" , "Senior businessperson (abbr)" , "Business leader" .)
(Other definitions for ceo that I've seen before include "Initials commonly used for top boss" , "Initially, the top boss" , "Initially, top man in an organisation" .)