Main entry: tier
Definition: one of two or more layers one atop another
Usage: tier upon tier of huge casks; a three-tier wedding cake
Main entry: tier
Definition: something that is used for tying
Usage: the sail is fastened to the yard with tiers
Definition: a worker who ties something
Main entry: tier
Definition: any one of two or more competitors who tie one another
Main entry: tier, grade, level
Definition: a relative position or degree of value in a graded group
Usage: lumber of the highest grade