Drinking tubes (6)
I believe the answer is:
straws
'drinking tubes' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for straws that I've seen before include "Tubes used to suck liquids" , "Lots" , "Dried stalks used as fodder or bedding" , "Thin tubes to suck up liquid" , "Thin plastic or paper tubes" .)