School leader hides master's blunders (12)
I believe the answer is:
'school leader' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'hides master's blunders' is the wordplay.
'blunders' indicates anagramming the letters.
'hidesmasters' anagrammed gives 'HEADMISTRESS'.
Can you help me to learn more?
(Other definitions for headmistress that I've seen before include "Person in charge of a school" , "Female school leader" , "Teacher" , "School principal" .)