ballast

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

1. any heavy material used to stabilize a ship or airship (Freq. 1)
• Hypernyms:
material, stuff
2. coarse gravel laid to form a bed for streets and railroads
• Hypernyms:
gravel, crushed rock
3. an attribute that tends to give stability in character and morals;
something that steadies the mind or feelings
• Hypernyms:
attribute
4. a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
• Syn:
ballast resistor, barretter
• Hypernyms:
resistor, resistance
5. an electrical device for starting and regulating fluorescent and discharge lamps
• Syn:
light ballast
• Hypernyms:
electrical device

II - verb

make steady with a ballast
• Hypernyms:
brace, steady, stabilize, stabilise
• Verb Frames:
- Somebody ----s something
- Something ----s something

• Từ đồng nghĩa / Synonyms:
  light ballast, ballast resistor, barretter