The most common and most likely answer to this crossword clue is the 7 letter word LOTTERY
I've seen this crossword clue in The Guardian
L
O
T
T
E
R
Y
More clues leading to the result LOTTERY
- Large mammal gets last of prey — it's a chancy business
- See title oddly used on line drawing
- Game ending in draw?
- Matter of chance, seeing animal close to colony beside lake
- Draw tail of animal like an aquatic carnivore?
- Chance of finding furry creature in outskirts of Laxey
- Draw large aquatic mammal at head of Yangtze
- Draw seal ultimately, like an aquatic creature?
- Animal found in empty laboratory as a matter of chance
- Gamble a great deal on a patched-up tyre
Buddy explains!

The straight part
We know that "Chance" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case chance = lottery.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 LOTTERY mean?
LOTTERY noun- A scheme for the distribution of prizes by lot or chance, especially a gaming scheme in which one or more tickets bearing particular numbers draw prizes, the other tickets are blanks.
- An affair of chance.
- (Shakespeare) Allotment; a thing allotted.