| line of scrimmage | |
| —n | |
| American football an imaginary line, parallel to the goal lines, on which the ball is placed at the start of a down and on either side of which the offense and defense line up | |
| a gadget; dingus; thingumbob. |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |