Load of chewing gum covered air conditioner (4)
I believe the answer is:
pack
'load' is the definition.
(packing is a kind of loading)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for pack that I've seen before include "Cards; group of animals" , "Wolf group" , "Prepare for holiday" , "Collection of wolves" , "Stow" .)