seventh

Từ điển Oxford Advanced Learner 8th

sev·enth [seventh sevenths] ordinal number, noun BrE [ˈsevnθ] NAmE [ˈsevnθ]
ordinal number
7th  There are examples of how to use ordinal numbers at the entry for fifth.
Idiom: ↑in seventh heaven
 
noun
each of seven equal parts of sth
 

• Từ đồng nghĩa / Synonyms:
  7th, one-seventh