dividing line
noun /dɪˈvaɪdɪŋ laɪn/
/dɪˈvaɪdɪŋ laɪn/
[usually singular]- something that marks the division or contrast between two things or ideas
- There is no clear dividing line between what is good and what is bad.
- a place that separates two areas
- The river was chosen as a dividing line between the two districts.