dividing line

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a conceptual separation or distinction
- there is a narrow line between sanity and insanity
• Syn:
line, demarcation, contrast
• Derivationally related forms:
contrast (for: contrast), demarcate (for: demarcation)
• Hypernyms:
differentiation, distinction
• Hyponyms:
Rubicon, point of no return