Vinculum is the name of the line between the numerator and the denominator.
Central meridian is a line on a map. It begins with the letter c.
vinculum
fractions
Linear or Line
Old Navy
Oscar De La Renta is a clothing line. It begins with the letter O.
Henry J. Kaiser had a line of automobiles. A kia begins with k
it often begins with a capital letter.
It's called the vinculum, but it can also be called the fraction bar or division bar.
The line where a new day begins is the International Date Line, running down the middle of the Pacific Ocean from pole to pole.
Fault line
All fractions can be labelled on a number line.