tier[noun]Synonyms: row, bank, layer, level, line, rank, storey, stratum 
Related Words: layer [TahlilGaran] English Synonym Dictionary ▲
 tier /tɪə $ tɪr/ 
 noun [countable][
Date: 1400-1500; 
Language: Old French; 
Origin: tire 'order, rank';  ⇒ attire]
1.  one of several levels or layers that rise up one above the other: 
 The lower tier has 10,000 seats.in tiers
 The lower tier has 10,000 seats.in tiers Terraces of olive trees rose in tiers.two-tiered/three-tiered etc (=having two, three etc levels or layers)
 Terraces of olive trees rose in tiers.two-tiered/three-tiered etc (=having two, three etc levels or layers) a three-tiered wedding cake2.
 a three-tiered wedding cake2.  one of several levels in an organization or system
tier of the most senior tier of managementthe first/second etc tier
 the most senior tier of managementthe first/second etc tier The second tier of the programme is in-house training.
 The second tier of the programme is in-house training. a two-tier system of government
 a two-tier system of government  [TahlilGaran] Dictionary of Contemporary English ▲