seventh
sev‧enth1 /ˈsevənθ/ 
adjective
1. coming after six other things in a series:
in the seventh century
her seventh birthday
2. be in seventh heaven informal to be extremely happy
—seventh pronoun:
I’m planning to leave on the seventh (=the seventh day of the month).
seventh2 noun [countable]
one of seven equal parts of something
| I |
adjective1. coming after six other things in a series:
2. be in seventh heaven informal to be extremely happy
—seventh pronoun:
| II |
noun [countable]one of seven equal parts of something