As worn for a master class initially? (3)
I believe the answer is:
mac
'as worn for' is the definition.
The definition suggests a singular noun which matches the answer.
'a master class initially?' is the wordplay.
'a master' becomes 'ma'.
'initially?' suggests taking the first letters (I've seen 'initially' mean this).
The initial letter of 'class' is 'c'.
'ma'+'c'='MAC'
Can you help me to learn more?
(Other definitions for mac that I've seen before include "A rainproof" , "one used in shower?" , "Waterproof raincoat, in short" , "Coat - computer" , "laptop?" .)