tier

noun

1. a relative position or degree of value in a graded group

   noun.state

   Synonyms grade level

   Source: WordNet 3.0

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

   noun.person

   Source: WordNet 3.0

3. a worker who ties something

   noun.person

   Synonyms tier up

   Source: WordNet 3.0

4. something that is used for tying

   noun.artifact

   Examples

   The sail is fastened to the yard with tiers.

   Source: WordNet 3.0

5. one of two or more layers one atop another

   noun.artifact

   Examples

   Tier upon tier of huge casks.

   A three-tier wedding cake.

   Source: WordNet 3.0

6. One who, or that which, ties.

   noun

   Source: webster1913

7. A chold's apron covering the upper part of the body, and tied with tape or cord; a pinafore.

   noun

   Source: webster1913

8. A row or rank, especially one of two or more rows placed one above, or higher than, another; as, a <i>tier</i> of seats in a theater.

   noun

   Source: webster1913