Open to breezes (4)
I believe the answer is:
airy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">open to breezes</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 airy that I've seen before include "Spacious; nonchalant" , "Spacious - aerial" , "Flippant" , "Light and insubstantial" , "'Up the . . . . mountain / Down the rushy glen' (William Allingham)" .)