tiers is a form of:

Tier



noun
1.
(Any of a series of rows) ជាន់, ថ្នាក់
Example: We sat in the third tier of the theater.
2.
(បច្ចេកទេស) ថ្នាក់, ជាន់
verb
1.
(TRANSITIVE) (To arrange (something) into or rise in tiers: tier a wedding cake; balconies that tier upward) រៀបជាថ្នាក់ៗ
  • tier table
    - តុដែលមានច្រើនថ្នាក់
ENGLISH MEANING
noun
1.
One who, or that which, ties.
2.
A chold's apron covering the upper part of the body, and tied with tape or cord; a pinafore.
3.
A row or rank, especially one of two or more rows placed one above, or higher than, another; as, a tier of seats in a theater.