1. Perpendicular.

2. A leaden weight attached to a line, for ascertaining whether anything, as a wall, is perpendicular.

3. To adjust by a plumb-line; to set in a perpendicular direction; to sound the depth of water with a plummet.

4. Perpendicularly.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• olume,
• lumb,
• plual,
• plumpy,
• columb,
• clumb,
• plumit,
• plumet,
• plugg,
• plub,
• pumb,
• glumb,
• aplumb,
• vlume,
• plamk,
• plama,
• pluar,
• plamt,
• plsma,
• plumbe

• plumbed,
• plumbing,
• plumbic,
• plumbago,
• plumber,
• plump,
• palumbo,
• plumbery,
• plumbous,
• plumbism.

The adverb for the word "plumb" is "plumbly".

The adjective form of the word "plumb" is "plumbable".

The plural of the "plumb" can be the "plumbs".

The singular of the "plumb" can be the "plumb".