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

• chelae
• chelas
• chelaship
• chelaships
• chelate
• chelated
• chelates
• chelating
• chelating agent
• chelation
• chelations
• chelation therapy
• chelator
• chelators
• chelicera
• chelicerae
• cheliceral
• chelicerate
• cheliferous
• cheliform
• cheliped
• chelipeds
• Chellean
• cheloid
• cheloidal