Embargo (7)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">embargo</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 boycott that I've seen before include "Refuse to deal with - Yorkshire and England batsman" , "Refuse to handle or deal with" , "Refuse to deal with - outlaw" , "Refuse to do business with" , "Ostracise" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">embargo</span>' is the definition.<br/ ><span class="explanation-format__explanation">(a ban on trade)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for ban that I've seen before include "the calling of young vassals" , "Officially prohibit" , "'Forbid, prohibit (3)'" , "Exile" , "Bar, prohibition" .)