Originally, to copy or write in a large hand derived from court hand for formal documents, often elaborate and nearly illegible; in more recent use, hand scripting or calligraphy done on diplomas and certificates, usually in a distinct and legible hand.
buying up all of a commodity in order to control prices; monopoly.
In English common law of the nineteenth century engrossing, forestalling and regrating were three terms used to describe the achievement of an illegal monopoly of a certain good, often food, at market. The terms are no longer in use.