sister
/ˈsɪstə(r)/noun
1
- a woman or girl in relation to other daughters and sons of her parents姐妹。
1.1
- a close female friend or associate, especially a female fellow member of a trade union or other organization亲密女友（或女同事, 尤指工会或其他组织的女性成员）。
1.2
- （常作Sister）a member of a religious order of women修女; 女教友。
1.3
- a fellow woman seen in relation to feminist issues（女权运动中的）姐妹。
1.4
- informal, chiefly N. Amer. a black woman (chiefly used as a term of address by other black people)〈非正式, 主北美〉大姐; 小妹（主要为黑人之间的称呼语）。
1.5
- usu. as modifier a thing, especially an organization, which bears a relationship to another of common origin or allegiance or mutual association（尤指组织之间的）姐妹（关系）：
Securicor and its sister company Securicor Services
安全投递公司和它的姊妹公司——安全押运服务有限公司
a sister ship.
姐妹船。
2
- （常作Sister）Brit. a senior female nurse, typically in charge of a ward〈英〉护士长。
派生词
sisterliness
nounsisterly
adjective词源
Old English, of Germanic origin; related to Dutch zuster and German Schwester, from an Indo-European root shared by Latin soror.