Gentle breeze (6)
I believe the answer is:
zephyr
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">gentle breeze</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 zephyr that I've seen before include "Balmy breeze" , "Greek god of the west wind" , "A soft gentle wind" , "Slight breeze" , "Mild breeze" .)