The most common and most likely answer to this crossword clue is the 6 letter word THIRTY
T
H
I
R
T
Y
More clues leading to the result THIRTY
- Re Lent: Christianity constructed basic set of beliefs
- Needing water, not Howards End, for the previous clue
- Heartless but correct about age
- Hit disastrously with freak try — a score and a half
- Number needing drink with supply principally lacking
- A number dry, waters finally drained out
- Figure that’s hungry polishing off seconds
- Rugby team needing a drink missing second score for Murray perhaps
- Bothered to take time for seconds, resulting in round figure
- Being parched with sun delayed fair number
Buddy explains!

The straight part
We know that "Number" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case number = thirty.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 THIRTY mean?
THIRTY noun- A rack of thirty beers.
- The cardinal number occurring after twenty-nine and before thirty-one, represented in Arabic numerals as 30.