plumb-, plumbo-, plumbi- +

1. Imperturbable self-possession, poise, or assurance: "She carried herself with the dignity and aplomb of a born leader."
2. Great coolness and composure under stress: "His nonchalance during hard times has always been his best character trait."
3. Self-confident assurance; poise:: "Samuel conducted the meeting with characteristic aplomb or self-confidence."
4. A perpendicular, or vertical, position.
5. Etymology: "Assurance, confidence," 1828, from French; literally, "perpendicularity", from the phrase à plomb, "poised upright, balanced"; literally, "on the plumb line", from Latin plumbum, "(the metal) lead"; of which the weight at the end of the line was made.

1. A weight on the end of a line, used to determine water depth.
2. A weight on the end of a line, used especially by masons and carpenters to establish a true vertical.
3. In a vertical or perpendicular line.
4. To determine the depth of water with a plumb; that is, "to sound the depths".
5. To test the verticality or alignment of something with a plumb.
6. To straighten or make perpendicular: "The mason will plumb up the wall to make sure it is straight."
7. To examine closely or deeply; to probe; that is, to succeed in fully understanding something, especially something mysterious.
8. To seal with lead; for example, to equip something with plumbing, seal pipes with lead, or to work as a plumber.

The ability to determine the depth of water or to establish a true vertical.

1. A crystalline substance said to be found in the root of a certain plant of the Leadwort (Plumbago) family.
2. Graphite; a soft, steel-gray to black, hexagonally crystallized allotrope of carbon with a metallic luster and a greasy feel, used in lead pencils, lubricants, paints, and coatings; which is fabricated into a variety of forms; such as, molds, bricks, electrodes, crucibles, and rocket nozzles. Also called black lead.
3. A drawing made by an instrument with a lead point.

Usually a conical metal weight attached to the end of a plumb line.

Resembling, consisting of, or containing lead; leaden.

Someone who installs and repairs pipes and plumbing; originally, simply a "worker in lead"; but eventually, since water pipes were once made of lead, a "pipe-layer".

The Romans used lead pipes, and the word plumber comes from the Latin word plumbum, "lead".

There is no Latin, or even Indo-European, etymology for plumbum but it bears a distant similarity to the Greek word for lead, the standard form of which, molubdos, gives us the name of a chemical element in the Periodic Table, molybdenum. Two non-standard forms, molibos and especially bolimos, are even more similar to Latin.

1. A plumber's workshop.
2. The work or trade of a plumber.

Pertaining to, resembling, or containing, lead; used specifically to designate those compounds in which it has a higher valence as contrasted with plumbous (lower valence) compounds; such as, plumbic oxide.

Producing or containing lead.

1. The system of pipes and other apparatus for conveying water, liquid wastes, etc., as in a building.
2. The work or trade of a plumber.>BR? 3. The act of a person who plumbs; such as, in determining depth.

1. Another name for lead poisoning.
2. A toxic condition produced by the absorption of excessive lead into the system.
3. A diseased condition, produced by the absorption of lead, common among workers in this metal or in its compounds, as among painters, typesetters, etc.

It is characterised by various symptoms; such as, lead colic, lead line, and wrist drop.

A variety of calcite containing a small amount of lead carbonate.

The ability of a solvent, notably water, to dissolve lead.

In the public supply of water this is an undesirable property, in (usually older) consumers' premises plumbosolvent water can attack lead pipes with the result that there is increased lead levels at the tap which is then consumed by drinking.

The use of lead and lead salts for therapeutic purposes.