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The Collaborative International Dictionary
Suspiral

Suspiral \Sus*pir"al\, n. [From Suspire.]

  1. A breathing hole; a vent or ventiduct.

  2. A spring of water passing under ground toward a cistern or conduit.

Wiktionary
suspiral

n. 1 A breathe hole; a vent or ventiduct. 2 A spring of water passing underground toward a cistern or conduit.