Pagers used by wine producers (6)
I believe the answer is:
grapes
'wine producers' is the definition.
Although both the answer and definition are plural nouns, I don't understand how they can define each other.
'pagers used' is the wordplay.
'used' indicates anagramming the letters.
'pagers' with letters rearranged gives 'GRAPES'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for grapes that I've seen before include "John Steinbeck wrote 'The . . . . . . of Wrath'" , "Fruit that grows in clusters" , "Fruit for wine" , "'Green, black or purple clusters (6)'" , "See 10 Across" .)