tossing

Toss"ing, n. 1. The act of throwing upward; a rising and falling suddenly; a rolling and tumbling. 2. (Mining) (a) A process which consists in washing ores by violent agitation in water, in order to separate the lighter or earhy particles; -- called also tozing, and treloobing, in Cornwall. Pryce. (b) A process for refining tin by dropping it through the air while melted.

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