Meaning of the word "throw someone under the bus" in English

What does "throw someone under the bus" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

throw someone under the bus

US /θroʊ ˈsʌm.wʌn ˈʌn.dər ðə bʌs/
UK /θrəʊ ˈsʌm.wʌn ˈʌn.dər ðə bʌs/
"throw someone under the bus" picture

Idiom

to betray or sacrifice someone, especially to save oneself from blame or difficulty

Example:
He decided to throw his colleague under the bus to avoid getting fired.
I can't believe she would throw me under the bus like that.