• Captain Aggravated@sh.itjust.works
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    23 hours ago

    Well straight off the dome I can think of another:

    A wall that is straight up and down is said to be ‘plumb’. …like pipes? Kinda! The tool we use to measure verticality is called a plumb bob, a heavy weight with a point on one end and a string on the other. The Romans named the tool after the material they made it out of. In English we call it lead. In Latin they called it plumbum. Which is where pipes got their name; they made pipes out of lead. It’s why the Atomic symbol for lead is Pb.