Lawyers talk of high winds in shelter (8)
I believe the answer is:
legalese
'lawyers talk' is the definition.
'high winds in shelter' is the wordplay.
'high winds' becomes 'gales' (I've seen this before).
'in' indicates putting letters inside.
'shelter' becomes 'lee' (I've seen this before).
'gales' inserted into 'lee' is 'LEGALESE'.
'of' acts as a link.
(Other definitions for legalese that I've seen before include "Bar talk" , "such language at the bar!" , "Special terms" , "formal language" , "barman's peculiar words" .)