What is the meaning of Linier?

linesman (men), lineswoman (women), assistant referee

flax

linear:

1. having the form of a line; straight or roughly straight; following a direct course
2. of or relating to lines
3. of or relating to a class of polynomial of the form ${\displaystyle y=ax+b}$

having the form of a line; straight or roughly straight; following a direct course

of or relating to lines

of or relating to a class of polynomial of the form ${\displaystyle y=ax+b}$

ruler (instrument)

linesman/lineswoman, assistant referee

obsolete spelling of linjer

Source: wiktionary.org