Bachelorette (noun)

1. An unmarried woman who is older than 18 years of age.
2. A woman who has never been married.

Origin:

From the french word "bachelière" meaning "young lady who is a bachelor".

Examples:

1. She was a bachelorette, enjoying her independence and freedom.
2. The party was a bachelorette party celebrating the bride-to-be's last days of singlehood.
3. The reality show followed the journey of a group of bachelorettes competing for the affections of a bachelor.
4. The bachelorette chose from among the eligible bachelors on the show.
5. She was the last bachelorette remaining on the show and ultimately chose her partner.