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   Ra·chis

   /ˈrākəs/

   

   noun

   • 1. a stem of a plant, especially a grass, bearing flower stalks at short intervals.
   • ▪ the midrib of a compound leaf or frond.
   • 2. the vertebral column or the cord from which it develops.
   • 3. the shaft of a feather, especially the part bearing the barbs.

   Word Origin late 17th century: via French and modern Latin from Greek rhakhis ‘spine’. The English plural -ides is by false analogy.

   Derivatives

   • 1. rachidial adjective

   Scrabble Points: 11

   • R

     1

   • A

     1

   • C

     3

   • H

     4

   • I

     1

   • S

     1

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