Webster's Revised Unabridged Dictionary · 1913

Stithy

Stithy , noun

[See Stith, and compare Stiddy.]

1.
An anvil. — Sir W. Scott
2.
A smith's shop; a smithy; a smithery; a forge.
As foul as Vulcan's stithy. — Shakespeare

Stithy , transitive verb

To forge on an anvil.
The forge that stithied Mars his helm. — Shakespeare