xyzzy

发音

UK /ˈzɪzi/

释义与例句

n.
  1. 1.

    Used as a placeholder word or metasyntactic variable.

    不可数

词源

From the seminal text adventure game Adventure (c.1975), where it served as a "magic word"; possibly originated as a mnemonic for the subscripts of the cross product in mathematics.

来源：wiktionary