Discuss English book in meeting (6)
I believe the answer is:
debate
'discuss' is the definition.
(debating is a kind of discussing)
'english book in meeting' is the wordplay.
'english' becomes 'e' (abbreviation).
'book' becomes 'b' (abbreviation for book).
'in' indicates putting letters inside.
'meeting' becomes 'date' (date is a kind of meeting).
'e'+'b'='eb'
'eb' going into 'date' is 'DEBATE'.
(Other definitions for debate that I've seen before include "Exchange of views" , "Discuss with opposing arguments" , "A public discussion about a topic" , "Discuss through argument" , "Public discussion, perhaps a contest" .)