A solid piece of a hard substance, such as wood, having one or more flat sides. Such a piece used as a construction member or as a support. Such a piece upon which chopping or cutting is done: a butcher's block. Such a piece upon which persons are beheaded. One of a set of small wooden or plastic pieces, such as a cube, bar, or cylinder, used as a building toy. Printing A large amount of text. Sports A starting block. A stand from which articles are displayed and sold at an auction: Many priceless antiques went on the block. A mold or form on which an item is shaped or displayed: a hat block. A substance, such as wood or stone, that has been prepared for engraving. A pulley or a system of pulleys set in a casing. An engine block. A bloc. A set of like items, such as shares of stock, sold or handled as a unit. A group of four or more unseparated postage stamps forming a rectangle. Canadian A group of townships in an unsurveyed area. A usually rectangular section of a city or town bounded on each side by consecutive streets. A segment of a street bounded by consecutive cross streets and including its buildings and inhabitants. A large building divided into separate units, such as apartments. A length of railroad track controlled by signals. The act of obstructing. Something that obstructs; an obstacle. Sports An act of bodily obstruction, as of a player or ball. Football Legal interference with an opposing player to clear the path of the ball carrier. Medicine Interruption or obstruction of a physiological function: nerve block.