Calm provided with fleet offering defence? (6)
I believe the answer is:
pacify
'calm' is the definition.
(pacifying is a kind of calming)
'provided with fleet offering defence?' is the wordplay.
'provided with' becomes 'if' (eg 'provided it's sunny' means 'if it's sunny'. I am not sure about the 'with' bit.).
'fleet' becomes 'pacy' (both can mean quick).
'offering defence?' is an insertion indicator (some letters contain or defend others).
'if' placed within 'pacy' is 'PACIFY'.
Can you help me to learn more?
(Other definitions for pacify that I've seen before include "Placate, calm" , "Quell the anger of" , "Appease - subdue" , "Make calmer" , "Make calm, appease" .)