IPA: /ˈɡraʊndˌskiːpər/
KK: /ˈgraʊndˌskipər/
A person responsible for taking care of the land and gardens, especially in parks, estates, or sports fields.
The groundskeeper mowed the lawn and trimmed the bushes to keep the park looking beautiful.
Groundskeeper → It is formed from "ground" (from Old English "grund", meaning the surface of the earth or land) and "keeper" (from Old English "cepan", meaning to guard or protect). A groundskeeper is someone who guards or maintains the land or grounds.
Think of someone who 'guards' ('keeper') the 'land' ('ground') — that's why a groundskeeper is responsible for maintaining the grounds.