Phrases starting with the letter: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Previous word: plumb bob
Next word: plumb rule
Definition of: plumb line
1. A cord by which a weight is suspended to test the perpendicularity or depth of something.
2. A plumb bob and its cord together.
3. A sounding line.
Comment about this word, ask questions, or add new information about this topic: