Intimidate meeting about small plant (3,7)
I believe the answer is:
cow parsley
'plant' is the definition.
(cow parsley is a kind of plant)
'intimidate meeting about small' is the wordplay.
'intimidate' becomes 'cow' (I've seen this before).
'meeting' means one lot of letters go next to another.
'about small' becomes 'parsley' (I can't justify this - if you can you should believe this answer much more).
'cow'+'parsley'='COW-PARSLEY'
(Other definitions for cow parsley that I've seen before include "Fragrant white wayside flower" , "Hedgerow plant" .)