To search (mullock (“mining or ore processing waste”)) for opals. / To obtain (an opal) by searching through mullock. / (also figuratively) To clear extraneous material from (an opal).

Alternative spelling of feculent

In an unbiblical way.

(telecommunications) A landline. / (oil industry) A wire that runs from a drill rig down into the drill hole to support a dead load or other downhole tool.