IPA: /ˈɡraʊndzmən/
KK: /ˈɡraʊndzmən/
A person, usually a man, who takes care of the grounds, such as gardens or sports fields, by maintaining the landscape and ensuring it is in good condition.
The groundsman worked hard to keep the soccer field looking perfect for the match.
Groundsman → It is formed from "ground" (from Old English "grund", meaning the surface of the earth) and "-sman" (a suffix meaning a person associated with or engaged in a particular activity). A groundsman is a person who is responsible for maintaining the ground or land, particularly in a park or sports field.
Think of someone who takes care of the 'ground' — that's what a groundsman does, as the suffix '-sman' indicates a person involved in that activity.