Meaning of the word "need to" in English

What does "need to" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

need to

US /niːd tuː/
UK /niːd tuː/

Phrasal Verb

to be obliged to do something; to be necessary to do something

Example:
You need to finish your homework before you can play.
We need to leave early to avoid traffic.