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Webster 1913 Edition

Noun.

[See

A shuttle.

[Obs.]

Chapman.

Adj.

Wavering; unsettled; inconstant.

[Obs.]

Holland.

Adj.

[See Shoot.] Wavering; unsettled. [Not used or or local.]

shittle ‎(comparative more shittle, superlative most shittle)

shittle ‎(plural shittles)

(archaic) A shuttle (part of a loom).
- Chapman
  A curious web, whose yarn she threw in with a golden shittle.