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Webster 1913 Edition

Noun.

[OF.

soillure

, F.

souillure

. See

to make dirty.]

Stain; pollution.

Shak.

Then fearing rust or

soilure

, fashioned for it
A case of silk.

Tennyson.

Noun.

Stain; pollution [Not in use.]

soilure ‎(plural soilures)

Making or becoming dirty; soiling, staining.
- 1913, Rebecca West, ‘Lynch Law’, The Young Rebecca, ed. Jane Marcus, Virago 1982, p. 207:
  Much more powerful than moral enthusiasm is the disinclination of the immaculate flesh to risk the soilure of the streets.