Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Sister" Definition
noun
A close woman friend or companion.
Source: American Heritage Dictionary
A fellow African-American woman or girl.
Source: American Heritage Dictionary
A fellow woman.
Source: American Heritage Dictionary
A female having the same parents as another or one parent in common with another.
Source: American Heritage Dictionary
A girl or woman who shares a common ancestry, allegiance, character, or purpose with another or others, specifically:.
Source: American Heritage Dictionary
adjective
Genetics Of or being one of an identical pair: sister chromatids.
Source: American Heritage Dictionary
Related by or as if by sisterhood; closely related: sister ships; sister cities.
Source: American Heritage Dictionary