1. One of the first seven ribs in a human being which attach to the sternum

Derived forms: true ribs

Type of: costa, rib

• untoward
• untraceable
• untracked
• untraditional
• untrained
• untrammeled
• untrammelled
• untransferable
• untranslatable
• untransmutable
• untraveled
• untravelled
• untraversable
• untraversed
• untreated
• untried
• untrimmed
• untrod
• untrodden
• untroubled
• untrue
• untruly
• untrustiness
• untrusting
• untrustworthiness