1. A plug of accurate thread, form, and dimensions on which cutting edges are formed; it is screwed into a hole to cut an internal thread.

2. A threaded cone-shaped fishing tool.

A connection made at some point other than the ends of a resistor or coil.

A small, threaded hole drilled into a pipe or process vessel; used as connection points for sampling devices, instruments, or controls.

1. A quantity of molten metal run out from a furnace at one time.

2. To remove excess slag from the floor of a pot furnace.

To intersect with a borehole and withdraw or drain the contained liquid, as water from a water-bearing formation or from underground workings.