hen's tooth

短语

发音

AU

词形变化

hen's teeth 复数 hen's teeth hens' teeth hens' teeth 复数

释义与例句

n.
  1. 1.

    Anything not naturally occurring.

    习语

    as rare as a hen's tooth

词源

Example of a jocularly non-existent phenomenon, as many birds lack any teeth (having developed a bill instead). Compare horsefeathers and when pigs fly.

来源：wiktionary