In seal engraving, a small metal disc at the end of a tool.

The rabble; crowds; the common people. / Sweepings; refuse.

(informal) guitar riffs

present participle of riff / present participle of rif

The act of one who riffs; an improvisation.

simple past tense and past participle of riff / simple past tense and past participle of rif

Who has lost a job due to a RIF.

present participle of riffle

sampling by use of a riffler

A mechanical device consisting of a metal box with a series of vertical slats through which material is poured and randomly divided into two samples; this process is repeated to obtain a small representative sample of a bulk material.