Tossing

Part of speech: noun (n.)

1. The act of throwing upward; a rising and falling suddenly; a rolling and tumbling.

2. 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.

3. A process for refining tin by dropping it through the air while melted.