the.com/hitter

means A person whose job or role is to hit — most commonly the batter in baseball, or, in slang, someone who delivers blows (literal or metaphorical) for a living.

from Straightforward agent-noun construction: 'hit' plus the suffix '-er,' which English has used for centuries to turn verbs into 'one who does the action' (baker, singer, hitter). 'Hit' itself traces back to Old Norse 'hitta,' meaning to come upon or meet with — the sense of forceful contact developed from there. No hidden story here; the word is exactly as literal as it looks, which is its own small charm.