Principal notice inserted in border in front of flower (10)
I believe the answer is:
headmaster
'principal' is the definition.
(headmaster is a kind of principal)
'notice inserted in border in front of flower' is the wordplay.
'notice' becomes 'ad' (short for advert).
'inserted in' means one lot of letters goes inside another.
'border' becomes 'hem' (I've seen this before).
'in front of flower' becomes 'aster' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ad' going into 'hem' is 'headm'.
'headm'+'aster'='HEADMASTER'
Can you help me to learn more?
(Other definitions for headmaster that I've seen before include "Top (male) teacher" , "Principal" , "School manager" .)
