- a line that marks the start of a race.
- Track and Field. a line that a competitor is not allowed to step over while performing in certain events, as the triple jump or javelin throw.
Origin of scratch line
First recorded in 1895–1900
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for scratch line
To facilitate the measurement, a line shall be drawn parallel to and 300 ft. in front of the scratch-line.