Webster's Revised Unabridged Dictionary · 1913

Ravel

Ravel (rav"'l) , transitive verb

[OD. ravelen, Dutch rafelen, akin to LG. rebeln, rebbeln, reffeln.]

1.
To separate or undo the texture of; to unravel; to take apart; to untwist; to unweave or unknit; -- often followed by out; as, to ravel a twist; to ravel out a stocking.
Sleep, that knits up the raveled sleave of care. — Shakespeare
2.
To undo the intricacies of; to disentangle.
3.
To pull apart, as the threads of a texture, and let them fall into a tangled mass; hence, to entangle; to make intricate; to involve.
What glory's due to him that could divide Such raveled interests? has the knot untied? — Waller
The faith of very many men seems a duty so weak and indifferent, is so often untwisted by violence, or raveled and entangled in weak discourses! — Jer. Taylor

Ravel , intransitive verb

1.
To become untwisted or unwoven; to be disentangled; to be relieved of intricacy.
2.
To fall into perplexity and confusion. [Obsolete]
Till, by their own perplexities involved, They ravel more, still less resolved. — Milton
3.
To make investigation or search, as by picking out the threads of a woven pattern. [Obsolete]
The humor of raveling into all these mystical or entangled matters. — Sir W. Temple