The most common and most likely answer to this crossword clue is the 7 letter word CHARLIE
I've seen this crossword clue in Financial Times
C
H
A
R
L
I
E
More clues leading to the result CHARLIE
- Fish, a whopper for Wally
- Man having rest after tea
- Cocaine found in tea, right? It’s not true
- Overcook pork pie and coke
- Code word for silly fellow taking cocaine
- Snow, ice spread around fish in Scotland
- Angel’s chief character on radio
- Chump or pork pie served after fish
- A fool, cleaner to tell tales
- Idiot put fish with pork pie!
Buddy explains!

The straight part
We know that "Snow" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case snow = charlie.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 CHARLIE mean?
CHARLIE noun- An enemy; the Vietcong; short for Victor Charlie.
- Cocaine.
- (often with "right" and/or "proper") A fool.
- (usually in the plural) A woman's breast
- A nightwatchman.
- A short, pointed beard, like that of King Charles I.