Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

plumb bob

noun

Simple Definition of plumb bob

  • : a usually small, heavy object that is used to make a string or rope hang straight : the heavy object that is part of a plumb line

Source: Merriam-Webster's Learner's Dictionary

Full Definition of plumb bob

  1. :  the metal bob of a plumb line

Circa 1840

First Known Use of plumb bob

circa 1840


Seen and Heard

What made you want to look up plumb bob? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to defraud especially of money

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

maudlin angry prompt oily
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ