Greasy = dirty?

[Jim Parish]

Alice Faber wrote:
> > "It's a greasy job," he said, "but somebody has to do it."
> (The speaker is a minor-league player, probably c. 20, from Western Canada.)
>
> More generally, in hockey, "greasy" generally means "gritty" or "tough":

Not directly related, but recently I've begun seeing the word "filthy"
used on baseball blogs to mean "extremely deceptive / hard to hit", as
in "a filthy curveball". I don't recall seeing it before this season.

Jim Parish

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