Hell-hole's opening for sexy person (4)
I believe the answer is:
dish
'sexy person' is the definition.
(dish can mean an attractive person)
'hell-hole's opening' is the wordplay.
'hell' becomes 'dis' (term for the underworld in Greek myth).
'opening' says to take the initial letters.
The initial letter of 'holes' is 'h'.
'dis'+'h'='DISH'
'for' is the link.
(Other definitions for dish that I've seen before include "stunner?" , "something in the oven?" , "Recipe; kitchen item" , "Sky can be seen through this" , "Peach" .)