indorsee

1."An indorsement in blank specifies no indorsee, and a bill so indorsed ecomes payable to bearer."

无记名背书并不书明被背书，以此方式背书，应成为以为收。

2.Holder: holder is a person in possession of a commercial paper that is payable at that time either to the order of such person as payee or indorsee or to bearer.

是有商业据的，该据的所有在据背面签名即成为背书。