1. (n.) Dizziness or swimming of the head\; an affection of the head in which objects, though stationary, appear to move in various directions, and the person affected finds it difficult to maintain an erect posture; giddiness.

2. (n.) Any one of numerous species of small land snails belonging to the genus Vertigo, having an elongated or conical spiral shell and usually teeth in the aperture.

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