Every twelve months (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">every twelve months</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 yearly that I've seen before include "Every 12 months" , "like circulation of the Sun?" , "A hundred times a century" , "in each revolution?" , "Unpleasant noise" .)
(Other definitions for annually that I've seen before include "Every year" , "As Christmas is coming" , "as MOTs must be renewed" , "at regular intervals" .)