plumb bob

Noun
  1. The metal bob of a plumb line (synset 103975060)
    is a type of: bob - a hanging weight, especially a metal ball on a string
    is a part of: perpendicular, plumb line - a cord from which a metal weight is suspended pointing directly to the earth's center of gravity; used to determine the vertical from a given point
    same as: plumb, plummet

Found on Word Lists

Other Searches