1. A numeral or string of numerals that is used for identification
   - number

Type of: positive identification

• vivisect
• vivisection
• vivisectional
• ragwort
• rah
• rah-rah
• Rahu
• raid
• raider
• raiding
• rail
• rail fence
• rail in
• rail line
• rail off
• rail technology
• rail-splitter
• railbird
• railcar
• railcard
• railer
• railhead
• railing
• raillery
• railroad