seventh
ordinal number /ˈsevnθ/
  /ˈsevnθ/
Idioms - 7th
- Today is the seventh (of May).
 - the seventh century BC
 - It's her seventh birthday.
 - My office is on the seventh floor.
 - It's the seventh time that I've been to America.
 - The artist had just sold another painting, her seventh.
 - the world’s seventh-largest oil exporter
 - He finished seventh in the race.
 - Edward VII (= Edward the Seventh)
 
 
Idioms 
in seventh heaven 
- extremely happy
- Now that he's been promoted he's in seventh heaven.