Plenty of luggage (4)
I believe the answer is:
bags
This clue is a double definition.
'plenty' is the first definition.
(I've seen this before)
'luggage' is the second definition.
(I've seen this in another clue)
'of' is the link.
(Other definitions for bags that I've seen before include "Flexible container" , "Items of luggage" , "I claim" , "strides?" , "Criticises" .)