The most common and most likely answer to this crossword clue is the 7 letter word RAWHIDE
I've seen this crossword clue in The Times
R
A
W
H
I
D
E
Buddy explains!

The straight part
We know that "Whip" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case whip = rawhide.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 RAWHIDE mean?
RAWHIDE noun- Untanned hide.
- A whip made from twisted untanned leather.
- To clear (a pump) of sediment by starting and stopping it repeatedly.
- To beat with a rawhide whip.