A stand of a strange new sort is brought in (7)
I believe the answer is:
rostrum
'a stand' is the definition.
(thesaurus)
'a strange new sort is brought in' is the wordplay.
'a strange' becomes 'rum' (I've seen this before).
'new' is an anagram indicator.
'is brought in' means one lot of letters goes inside another.
'sort' anagrammed gives 'ostr'.
'rum' placed around 'ostr' is 'ROSTRUM'.
'of' acts as a link.
(Other definitions for rostrum that I've seen before include "Platform for public speaking" , "beak" , "Podium" , "Rum rots (anag)" , "stage" .)