vt.

1. 解开；弄清
2. 使错综复杂

vi.

1. （线等）松开
2. 缠结

n.

1. 纠结；混乱

v.

1. (ravel something out) untangle something.
2. unravel; fray.
3. confuse or complicate (a question or situation).

n.