"sisther" is probably misspelled. Trying sister instead Definition of sister
sister has definitions from the fields of Roman Catholic,religion
1
[ noun ] a female person who has the same parents as another person

Synonyms

sis

Examples

"my sister married a musician"

2
[ noun ] a female person who is a fellow member of a sorority or labor union or other group

Examples

"none of her sisters would betray her"

3
[ noun ] (Roman Catholic) a title given to a nun (and used as a form of address)

Examples

"the Sisters taught her to love God"

4
[ adjective ] being associated as a companion or associate

Synonyms

fellow brother

Examples

"fellow traveler" "brother workers" "sister ship"

5
[ noun ] (slang) sometimes used as a term of address for attractive young women

Synonyms

baby

*