This is the 2225th most frequent Japanese word.
絡む
To entangle, intertwine, become involved, or interfere.
In this sentence, "絡む" is used to describe the physical act of becoming entangled, as the yarn wraps around the cat.
猫が毛糸に絡んで遊んでいる。
The cat is tangled in the yarn and playing.
Here, "絡む" metaphorically represents involvement or connection, indicating that factors are intertwined with the issue.
この問題には複雑な要因が絡んでいる。
This issue involves complex factors.
In this case, "絡む" is used to mean an approach or unwanted interference, often with negative or aggressive connotation.