Drinks with this semi-turned up around the outside of protective garment (7)
I believe the answer is:
imbibes
'drinks' is the definition.
('imbibe' can be a synonym of 'drink')
'this semi-turned up around the outside of protective garment' is the wordplay.
'this semi' becomes 'semi'.
'turned up' says the letters should be written backwards.
'around' is an insertion indicator.
'the outside of protective garment' becomes 'bib' (I can't justify this - if you can you should believe this answer much more).
'semi' back-to-front is 'imes'.
'imes' going around 'bib' is 'IMBIBES'.
'with' acts as a link.
Can you help me to learn more?
(Other definitions for imbibes that I've seen before include "Drinks (alcohol); absorbs (ideas)" , "Drinks, swallows" .)