Meaning oflight upin English

Verb

1. to illuminate something; make brighter
   The city lights will light up the night sky.
2. to start emitting light; become activated
   The firework is going to light up and explode in the air.
3. to show increased activity; improve mood
   Her face will light up when she sees the surprise party.
4. to ignite a cigarette, etc.; start smoking
   He stopped to light up a cigarette during the break.
5. to become cheerful; experience joy (emotionally)
   The news of her engagement will light up her whole week.