Sun-worshipper initially makes fun of garments (6)
I believe the answer is:
smocks
'garments' is the definition.
(I've seen this before)
'sun-worshipper initially makes fun of' is the wordplay.
'sun-worshipper' becomes 's' (this could be a standard abbreviation I've not previously seen).
'initially' means one lot of letters go next to another (some letters go before others).
'makes fun of' becomes 'mocks' (I've seen this in another clue).
's'+'mocks'='SMOCKS'
Can you help me to learn more?
(Other definitions for smocks that I've seen before include "Loose long coveralls" , "Loose coveralls, worn by artists perhaps" , "old women" , "countryfolks' garb?" , "artist's clothes" .)