释义 |
plumb-bob|ˈplʌmˌbɒb| The leaden bob, usually conoidal, forming the weight of a plumb-line.
1835–40Haliburton Clockm. (1862) 16 If he is found here after twenty-four hours, they'd make a carpenter's plumb-bob of him, and hang him outside the church steeple. 1879Cassell's Techn. Educ. IV. 190/1 A spirit level is laid upon its edge, or a plumb-bob is dropped from its middle point. |