Suckers for the bottle (6)
I believe the answer is:
straws
'suckers' is the definition.
Although both the answer and definition are plural nouns, I don't see how one could define the other.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for straws that I've seen before include "Lots" , "In the wind, they are signs or portents" , "Tubes used to suck liquids" , "Dried stalks used as fodder or bedding" , "Grass stems after grain is removed" .)