chalk line
noun Building Trades.
a chalked string for making a straight line on a large surface, as a wall, by holding the string taut against the surface and snapping it to transfer the chalk.
the line so made.
Origin of chalk line
late Middle English word dating back to 1400–50
Words nearby chalk line
chaliced,
chalicosis,
chalicothere,
chalk,
chalk and talk,
chalk line,
chalk out,
chalk stripe,
chalk talk,
chalk up,
chalkboard