5 down
Piles
rocks
on
top
of
soil
to
form
pitches
(6)
Piles rocks on top of soil to form pitches (6)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
Look at pitches at the end — that's your definition, meaning sales talks. Piles rocks tells you to anagram PILES to get SPIEL, then on top of soil gives you S, the top letter of "soil", tacked on at the end.