n. A machine for cleansing or loosening wool by the action of a revolving cylinder covered with long iron spikes or teeth; a willying machine.
the GNU version of the Collaborative International Dictionary of English
n. A machine for cleansing or loosening wool by the action of a revolving cylinder covered with long iron spikes or teeth; a willy or willying machine; -- called also twilly devil, and devil. See devil, n., 6, and willy.
Word Usage
"They are a new line of all-leather and colourful lacquer bracelets, and leather visors to be worn tied with a twilly like a tennis cap."