Sloping type (7)
I believe the answer is:
italics
'sloping type' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for italics that I've seen before include "Typeface with letters slanting to the right" , "way of writing?" , "Letters in sloping type" , "Sloping font" , "Sloping typeface" .)