p.pr. & ·vb.n. of toss.
2. tossing ·noun a process for refining tin by dropping it through the air while melted.
3. tossing ·noun the act of throwing upward; a rising and falling suddenly; a rolling and tumbling.
4. tossing ·noun 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.