tier

One of a series of rows placed one above another.

A rank or class.

To arrange (something) into or rise in tiers.

A range of mountains.

A row; a rank, particularly when two or more rows are placed one above another: as, a tier of seats in a theater; the old three-decked war-ships had three tiers of guns on each side, the upper, middle, and lower tiers.

In organ-building, same as rank, 1 .

One who or that which ties.

A child’s apron. Also, erroneously, tire.

In entomology, same as leaf-tier.

To pile, build, or arrange in tiers. Compare tierer.