plummet /plumˈit/

To plunge headlong

To fathom, sound

1. A leaden or other weight, esp on a plumb line, sounding-line, or fishing-line
2. A plumb rule

• telescopic shaft
• tartarise
• tartarised
• tartarises
• tartarising
• tartarization
• tartarizations
• tartarize
• tartarized
• tartarizes
• tartarizing
• Tartarly
• tartars
• Tartars
• tartar sauce
• tartar steak
• tartar steaks
• Tartarus
• Tartary
• tarted-up
• tarter
• tartest
• tarte tatin
• tartier
• tartiest