1. A violation of law; an illegality.
2. Lawlessness.
“But lawlessness is often a superficial phenomenon and whenever the duke was strong enough to keep the peace then law revived. We hear the same of England: times of ‘unlaw’ alternate with times of law.” 1 Frederick Pollock & Frederic W. Maitland, The History of English Law Before the Time of Edward I 68–69 (2d ed. 1898).
3. Scots law. An illegal act.
4. Scots law. A fine; a penalty.