doornail

名词 doornail:

1. a nail with a large head; formerly used to decorate doors

1. The old man was dead as a doornail.
   那老头已经直挺挺地死了。
2. Be careful with that bottle. It's cyanide. One swallow of that and you'd be dead as a doornail.
   当心那个瓶子，那是氰化物。只要喝上一口，就会叫人一命呜呼。
3. The treaty may be considered to be as dead as a doornail.
   这项条约可以认为是完全作废了。
4. It lay there with its eyes closed, dead as a doornail.
   它躺在那里眼睛闭著，确实死了。

door.nail

n.（名词）
A large-headed nail.
大头钉

<习惯用语>dead as a doornail
Undoubtedly dead.
确已死亡的