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| a gadget; dingus; thingumbob. |
| a chattering or flighty, light-headed person. |
| plumb line | |
| —n | |
| 1. | a string with a metal weight at one end that, when suspended, points directly towards the earth's centre of gravity and so is used to determine verticality, the depth of water, etc |
| 2. | another name for plumb rule |
| plumb line (plŭm) Pronunciation Key
A line regarded as directed exactly toward the Earth's center of gravity. |