IPA: /ˈbɒdiˌɡɑːd/
KK: /ˈbɑdiˌɡɑrd/
A person who is hired to protect someone from danger or harm.
The celebrity hired a bodyguard to ensure her safety during the event.
Bodyguard → It is formed from "body" (from Old English "bodig", meaning the physical structure of a person) and "guard" (from Old French "guarder", meaning to keep safe or protect). The word "bodyguard" refers to someone who protects the physical body of another person.
Think of someone who is there to 'protect' ('guard') your 'body' — that's what a bodyguard does.