Blue-green (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">blue-green</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 aqua that I've seen before include "Water (L)" , "- Regia; - fortis" , "Latin for water" , "Prefix denoting "water"" , "Hue" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">blue-green</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that blue-green can be written as teal)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for teal that I've seen before include "Variety of small ducks" , "Type of duck" , "Duck; greenish-blue colour" , "Dark green-blue; duck" , "Small freshwater duck and colour" .)