Sister

Some studies have found that sisters display more traits indicating jealousy around their siblings than their male counterparts, brothers.

[3] In some cultures, sisters are afforded a role of being under the protection by male siblings, especially older brothers, from issues ranging from bullies or sexual advances by womanizers.

[4] In some quarters, the term sister has gradually broadened its colloquial meaning to include individuals stipulating kinship.

[5] In response, in order to avoid equivocation, some publishers prefer the usage of female sibling over sister.

[13] The reverse is true for young boys with several sisters, as they tend to be feminine, however, they outgrow this by the time they approach pubescence.