The most common and most likely answer to this crossword clue is the 7 letter word BRAIDED
I've seen this crossword clue in The Times
B
R
A
I
D
E
D
More clues leading to the result BRAIDED
Buddy explains!

The straight part
We know that "Nicely stranded" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case nicely stranded = braided.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 BRAIDED mean?
BRAIDED verb- To make a sudden movement with, to jerk.
- To start into motion.
- To weave together, intertwine (strands of fibers, ribbons, etc.); to arrange (hair) in braids.
- To mix, or make uniformly soft, by beating, rubbing, or straining, as in preparing food.
- To reproach; to upbraid.