What is Craft?

Legal Definition
A craft is a pastime or a profession that requires particular skills and knowledge of skilled work. In a historical sense, particularly as pertinent to the Middle Ages and earlier, the term is usually applied to people occupied in small-scale production of goods, or their maintenance, for example by tinkers. The traditional terms craftsman and craftswoman are nowadays often replaced by artisan and rarely by craftsperson (craftspeople).
-- Wikipedia
Legal Definition
I. A general term, now commonly applied to all kinds of sailing vessels, , though formerly restricted to the smaller vessels. The Wenonah, 21 Grat (Va.) 697; Reed v. Ingham, 3 El. & B. 898. 2. A trade or occupation of the sort requiring skill and training, particularly manual skill combined with a knowledge of the principles of the art; also the body of persons pursuing such a calling; a gulld. Gan-ahl v. Shore, 24 Ga. 23. 3. Guile, artful cunning, trickiness. Not a legal term in this sense, though often used in connection with such terms as "fraud" and "artifice."
-- Black's Law Dictionary