Accuses single male going with beauties (9)
I believe the answer is:
'accuses' is the definition.
(impeach can mean to accuse of a crime)
'single male going with beauties' is the wordplay.
'single' becomes 'i' (one).
'male' becomes 'm' (common abbreviation).
'going with' means one lot of letters go next to another.
'beauties' becomes 'peaches' ('peach' can be a synonym of 'beauty').
(Other definitions for impeaches that I've seen before include "Questions" , "charges" .)