Crossword Genius

Dumping grounds dry up, one of those filled with sewage (7)

Ross

I believe the answer is:

cesspit

I'm a little stuck... Click here to teach me more about this clue!

'one of those filled with sewage' is the definition.
I can't judge whether this definition defines the answer.

'dumping grounds dry up' is the wordplay.
'dumping grounds' becomes 'tips' (I can't justify this - if you can you should believe this answer much more).
'dry' becomes 'sec' (similar in meaning).
'up' is a reversal indicator (in down clue: letters go upwards).
'tips'+'sec'='tipssec'
'tipssec' backwards is 'CESSPIT'.

Can you help me to learn more?

(Other definitions for cesspit that I've seen before include "Sewage holder" , "Place for filthy water" , "Sump" , "Sewage receptacle" , "Foul and squalid place" .)

I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.