Definitions for "Hashmarks"
The short lines used to spot the ball on the field.
The rows of lines on the field, near the middle of the field, that signal 1 yard increments. The ball is marked at or near the hashmarks prior to each play.
The marks just outside the middle of the field that span the entire field and are the same width as the uprights. If a ball carrier is tackled outside the hash marks, the ball is spotted on the nearest hashmark. However if the carrier is tackled between the hashmarks, the ball is spotted where the carrier was taken down. Not to be confused with "trackmarks", the permanent scars that Lawrence Taylor now has on his body.