SODIUM-VAPOR LAMP as NOUN

1. Meaning
   • lamp in which an electric current passed through a tube of sodium vapor makes a yellow light
   • used is street lighting
   Synonym(s)
   • sodium-vapour lamp (what does sodium-vapour lamp mean?)
   Hypernyms(s) sodium-vapor lamp is a kind of… Example: animal is a hypernym of mammal, plant is a hypernym of flower
   • lamp (what does lamp mean?)