Trendy Clio's oddly getting gold tooth (7)
I believe the answer is:
incisor
'tooth' is the definition.
(I know that incisor is a type of tooth)
'trendy clio's oddly getting gold' is the wordplay.
'trendy' becomes 'in' ('in' can mean fashionable).
'oddly' means one should take alternating letters (letters in odd-numbered positions).
'getting' means one lot of letters go next to another.
'gold' becomes 'or' ('or' is the heraldic name for gold).
The alternate letters of 'clios' are 'cis'.
'in'+'cis'+'or'='INCISOR'
(Other definitions for incisor that I've seen before include "something with bite" , "Chisel-edged tooth" , "Ivory perhaps" , "One takes a bite" , "cutter" .)