The most common and most likely answer to this crossword clue is the 7 letter word MARLINE
M
A
R
L
I
N
E
Buddy explains!
The straight part
We know that "line" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case line = marline.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 MARLINE mean?
MARLINE noun- A light cord or rope used to bind the end of a larger rope, to prevent fraying.
- Twine used similarly.
- To wind marline around.