Reserve weapon: it can reduce work for members? (4,4)
I believe the answer is:
book club
'it can reduce work for members?' is the definition.
The definition suggests a singular noun which matches the answer.
'reserve weapon' is the wordplay.
'reserve' becomes 'book' (to book something is to reserve it).
'weapon' becomes 'club' (weapon for hitting people with).
'book'+'club'='BOOK CLUB'
Can you help me to learn more?
(Other definitions for book club that I've seen before include "Lit. Soc." , "literary gathering" , "Society giving members cheaper access to reading material" , "Literary group" , "group of readers" .)