spitting

noun

The act or practice of expectoration.

noun

An appearance seen on the surface of silver which has been melted in considerable quantity and then allowed to cool slowly, protuberances like miniature volcanic cones being formed just as the surface of the metal begins to solidify, through the orifices of which oxygen gas escapes, sometimes with sufficient violence to throw out bits of the molten metal.

verb

Present participle of spit.

noun

expectoration

noun

the act of spitting (forcefully expelling saliva)