A person or thing that throws or hurls something with force.
From 'fling' (Old English 'flingan', to throw) plus the agent suffix '-er' (indicating one who performs an action). Common in English to form occupational or action-related nouns.
The '-er' suffix is one of English's most productive word-building tools, turning almost any verb into an agent noun. A stone-flinger, fire-flinger, or insult-flinger all work instantly without needing dictionary entries.
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