Realise, laconic, and deploy hot air (6,3)
I believe the answer is:
tumble dry
'deploy hot air' is the definition.
I don't know anything about this answer so I cannot judge whether this works.
'realise laconic' is the wordplay.
'realise' becomes 'tumble' (I am not sure about this - if you are sure you should believe this answer much more).
'laconic' becomes 'dry'.
'tumble'+'dry'='TUMBLE-DRY'
'and' is the link.
Can you help me to learn more?
(Other definitions for tumble dry that I've seen before include "last stage of laundering" , "spin, with hot air" .)