Cliff's parking instructions, including integrated circuit (9)
I believe the answer is:
precipice
'cliff's' is the definition.
(precipice is a kind of cliff)
'parking instructions including integrated circuit' is the wordplay.
'parking' becomes 'p' (abbreviation on road signs).
'instructions' becomes 'recipe' (I've seen this before).
'including' means one lot of letters goes inside another.
'integrated circuit' becomes 'ic' (abbreviation in electronics).
'recipe' going around 'ic' is 'recipice'.
'p'+'recipice'='PRECIPICE'
(Other definitions for precipice that I've seen before include "High, very steep cliff" , "(Overhang of) steep cliff" , "Steep cliff face" , "Sheer drop" , "Steep rock face" .)