establishedlines

noun
UK /ɪˈstæblɪʃt laɪnz/
US /ɪˈstæblɪʃt laɪnz/

Lines that are already set and known by everyone.

The teacher drew established lines on the paper so we knew where to write.


OTHER MEANINGS

2. The usual ways a company or group does things.

The new boss changed the established lines of how the team works.

3. Routes or paths that are already planned and used.

The buses follow established lines through the city.

4. Accepted ideas or beliefs that most people share.

Her story went against the established lines of thinking.