Pronunciation: (tOO'tēr'), [key]
1. consisting of two tiers, floors, levels, or the like: a two-tier wedding cake.
2. consisting of two separate price structures, sets of regulations, etc.: a two-tier fare system for subways and buses. Also,two'-tiered'.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.