tier

Noun

• one of two or more layers one atop another
  • tier upon tier of huge casks
    
  • a three-tier wedding cake
    

• something that is used for tying
  • the sail is fastened to the yard with tiers
    

• a worker who ties something

• any one of two or more competitors who tie one another

• a relative position or degree of value in a graded group
  • lumber of the highest grade
    

Related words

• Synonyms: 
  tier up , grade , level