1. (noun) one part in seven equal parts

• one-seventh

2. (adjective) coming next after the sixth and just before the eighth in position

• 7th

1. (noun) position seven in a countable series of things

• rank

2. (noun) one part in seven equal parts

• common fraction
• simple fraction

3. (noun) the musical interval between one note and another seven notes away from it

• interval
• musical interval

1. (adjective) coming next after the sixth and just before the eighth in position

• ordinal

1. (noun) position seven in a countable series of things

• 7th