The most common and most likely answer to this crossword clue is the 3 plus 7 letter word SKI JUMPERS
I've seen this crossword clue in The Times
S
K
I
J
U
M
P
E
R
S
Buddy explains!
The straight part
We know that "Winter Olympians" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case winter olympians = ski jumpers.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.