The most common and most likely answer to this crossword clue is the 6 letter word LARIAT
I've seen this crossword clue in The Guardian
L
A
R
I
A
T
More clues leading to the result LARIAT
- A trial — faulty lasso
- Cowcatcher in car, not the front, in the flipping rear!
- Follow up about a source of rope — this rope?
- Latin song by tenor: The Cowboy’s Accessory
- A trial leading to the noose?
- Rope has number in Lithuania
- Operatic song with officer about a rope
- Rope line, one gnawed by a rodent?
- Rope in a trial becomes tangled
- Strain on stage stretches lieutenant’s rope
Buddy explains!

The straight part
We know that "Rope" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case rope = lariat.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 LARIAT mean?
LARIAT noun- A lasso.
- A tether.
- An attack where the wrestler runs towards an opponent, wraps his arm around their upper chest and neck and then forces them to the ground.
- To lasso.