lifeguard
UK[ˈlaɪfɡɑːd]US[ˈlaɪfɡɑːrd]
n
a person employed at a beach or swimming pool to rescue swimmers who are in difficulty.
n
a person or thing that protects against a particular danger or problem.
Morpheme Breakdown
life
guard
life
living
guard
protector
Etymology
the compound noun 'lifeguard' is a transparent combination of two english words of germanic and romance origin, respectively. the old english word 'līf' has germanic roots and broadly denotes existence or animate being. the word 'guard' entered english via old french from a west germanic source related to 'ward', carrying the core sense of protection and vigilance. when combined in the early 17th century, the term literally meant 'a guard for one's life', initially referring to a bodyguard. its specialized modern meaning, a rescuer at swimming areas, emerged in the early 20th century alongside the rise of public recreational swimming, logically extending the concept from general life protection to a specific, preventative surveillance role.
Analysis
Structure: life (living) + guard (protector)
life (old english 'līf', meaning 'existence, living being', functioning as a noun root). guard (from old french 'garder', meaning 'to watch, keep, protect', functioning as a noun root).
Examples
the lifeguard blew the whistle to warn swimmers of the strong current.
she worked as a lifeguard at the community pool every summer.
regular exercise can act as a lifeguard against heart disease.