Jaunty milk-factory leader goes missing (4)
I believe the answer is:
airy
'jaunty' is the definition.
(I've seen this in another clue)
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for airy that I've seen before include "Sprightly" , "Well-ventilated; casual" , "Delicate, casual" , "(Of ideas) speculative" , "Spacious; delicate" .)