The most common and most likely answer to this crossword clue is the 7 letter word HYDRANT
I've seen this crossword clue in The Guardian
H
Y
D
R
A
N
T
More clues leading to the result HYDRANT
- Main connection linking stars to conservation group
- Pipe a monster - not drained
- Engineer hadn’t really emptied water supply
- Nine-headed monster nut eviscerated in main outlet
- Might it leave you other than dry?
- Main connection with notorious alter ego’s endless tirade
- Water source flowed between hotel yard and end of street
- Opening in the main consists of lofty-sounding Democrat’s tirade
- We have new tap originally for a water point
- Monster and insect without a main outlet
Buddy explains!
The straight part
We know that "water supply" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case water supply = hydrant.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does HYDRANT mean?
HYDRANT noun- An outlet from a liquid/fluid main often consisting of an upright pipe with a valve attached from which fluid (e.g. water or fuel) can be tapped.