Warn a looker about Scottish man (8)
I believe the answer is:
admonish
'warn' is the definition.
(I know that admonish is a type of warn)
'a looker about scottish man' is the wordplay.
'looker' becomes 'dish' (I've seen this in another clue).
'about' means one lot of letters goes inside another.
'scottish man' becomes 'mon' (I am not sure about this - if you are sure you should believe this answer much more).
'dish' placed around 'mon' is 'dmonish'.
'a'+'dmonish'='ADMONISH'
Can you help me to learn more?
(Other definitions for admonish that I've seen before include "Firmly reprimand" , "Gently reprove" , "Chide, reprove" , "Chide or reprimand" , "criticise" .)