tier (n.)

  1. a relative position or degree of value in a graded group; lumber of the highest grade

    [ Syn: grade , level ]

  2. any one of two or more competitors who tie one another

  3. a worker who ties something

    [ Syn: tier up ]

  4. something that is used for tying; the sail is fastened to the yard with tiers'

  5. one of two or more layers one atop another; tier upon tier of huge casks; a three-tier wedding cake'

The dictionary is based on the WordNet Electronic Lexical Database.
WordNet 3.0 Copyright 2011 by Princeton University. All rights reserved.