IPA: /ˈslɪŋər/
KK: /ˈslɪŋər/
A person who throws or launches something, often using a tool called a sling.
The slinger skillfully launched the stone across the field.
Slinger → It is formed from "sling" (from Old English *slingan*, meaning to throw) and "-er" (meaning a person who). A slinger is a person who throws or hurls something, typically a projectile.
Think of someone who 'throws' ('sling') something — the '-er' just means a person. A slinger is someone who throws.