Definitions:

1. a female person who has the same parents as another person noun
   • my sister married a musician
2. a female person who is a fellow member of a sorority or labor union or other group noun
   • None of my sisters would betray me.

Synonyms:

• baby
• sis

NearBy Words:

• sister-in-law
• sisterhood
• sisterlike
• sisterly
• sistership