noun
plural -ters
[count] :a girl or woman who has one or both of the same parents as you
informal - used when talking to a woman
or Sister [count] :a member of a religious community of women :nun
[count] :a woman who is from the same group or country as you
[count] US informal :a black woman - used especially by African-Americans;
or Sister [count] chiefly Brit :a nurse in a hospital ward or clinic - see also weak sister
adjective
always used before a noun
belonging to the same kind or group :having similar qualities or characteristics