What is the meaning of Stith?

An anvil; a stithy.

strong; stiff; rigid

Stiff, steady, stable; not pliable.

Strong, brave; having strength.

Mighty, flourishing, profuse; indicative of wealth.

Severe, intense, powerful; having intensity.

Merciless, unforgiving; showing no quarter.

anvil (iron block for shaping metal)

strong

Source: wiktionary.org