watershed

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a ridge of land that separates two adjacent river systems (Freq. 1)
• Syn:
water parting, divide
• Derivationally related forms:
divide (for: divide)
• Hypernyms:
line
• Hyponyms:
continental divide
• Instance Hyponyms:
Great Divide
2. the entire geographical area drained by a river and its tributaries;
an area characterized by all runoff being conveyed to the same outlet
- flood control in the Missouri basin
• Syn:
river basin, basin, drainage basin, catchment area, catchment basin, drainage area
• Hypernyms:
geographical area, geographic area, geographical region, geographic region
• Hyponyms:
detention basin, retention basin
3. an event marking a unique or important historical change of course or one on which important developments depend
- the agreement was a watershed in the history of both nations
• Syn:
landmark, turning point
• Hypernyms:
juncture, occasion
• Hyponyms:
Fall of Man, road to Damascus

• Từ đồng nghĩa / Synonyms:
  landmark, turning point, river basin, basin, drainage basin, catchment area, catchment basin, drainage area, water parting, divide