peerage
/ˈpɪərɪdʒ; `pɪrɪdʒ/ n
1 [Gp] the whole body of peers 贵族（总称）
elevate/raise sb to the peerage, ie make sb a peer or peeress 封某人为贵族.
2 [C] rank of a peer 贵族的爵位
inherit a peerage 承袭贵族的爵位.
3 [C] book containing a list of the peers and details of their ancestry 贵族名册（记载所有贵族家谱的）.