graveler

• graveller

From Middle English gravelere, equivalent to gravel +‎ -er.

graveler (plural gravelers)

1. One who deals, sells, or works with gravel
   • 1838, The Court magazine and belle assemblée [afterw.] and monthly critic and the Lady's magazine and museum, volume 13:

     In time to pass muster as a gatherer of stones, a graveller, a roller of paths, or it may be a setter of pulse rows, (though by the mass I misdoubt the last, hugely), but never to be taken for what you have vainly boasted yourself […]

2. A container filled with gravel or stones used as a filtration device
   • 1992, Christopher G. Morris, Academic Press, Academic Press Dictionary of Science and Technology, page 70:

     Alberger process Chemical Engineering, a process for manufacturing salt by heating brine under high pressure, then passing it to a graveler to remove calcium sulfate.

   • 2006, We Family Publications and Consulting, Thou Shalt Not Abuse Thy Spouse, page 59:

     In the second step of the salt refining process the heated brine then goes into a graveler filled with cobblestones to remove the impurities.

   • 2015, Michele Anna Jordan, The Good Cook's Book of Salt and Pepper:

     At this point, it is a rolling, boiling stew of salt, a supersaturated brine that is pumped into a long, cylindrical container called a graveler, filled with large lake stones.

• glaverer, regravel