Acidulous (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">acidulous</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for tart that I've seen before include "Sharp - bakery product" , "Sour -- acid" , "Sharp; pastry" , "quiche, perhaps" , "Open-topped pie" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">acidulous</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for sour that I've seen before include "Acrid or sullen" , "Curdled" , "Having an acid taste or smell" , "Acid - rancid" , "Rancid or tart" .)