One who ties (knots, etc). / Something that ties. / (archaic) A child's apron.

A layer or rank, especially of seats or a wedding cake.

(transitive) To arrange in layers. / (transitive) To cascade in an overlapping sequence.

simple past tense and past participle of tier

Having or made of tiers

plural of tier

Third-person singular simple present indicative form of tier

present participle of tier

Belonging to the top tier: elite, prestigious.

Top level, top rank, top standing. / Elite.