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Webster 1913 Edition

Adj.

Bright; shining; radiant; sheen.

“A sheeny summer morn.”

Tennyson.

Up rose each warrior bold and brave,

Glist'ring in filed steel and armor sheen. Fairfax. [This word is used only in poetry.]

sheeny ‎(plural sheenies)

(slang, offensive, ethnic slur) A Jew.
- 1922, James Joyce, Ulysses:
  Shylock chimes with the jewbaiting that followed the hanging and quartering of the queen’s leech Lopez, his jew’s heart being plucked forth while the sheeny was yet alive
- 1946, Mezz Mezzrow & Bernard Wolfe, Really the Blues, Payback Press 1999, p. 6:
  One time in Humboldt Park Leo "Bow" Gisensohn, our leader, didn't like the way a cop down by the lake called him "sheeny."

a Jew (slur)

From sheen + -y.

sheeny ‎(comparative sheenier, superlative sheeniest)