n.

1. 谈判，协商[P1][（+with）]
   Peace negotiations are still going on.

   和谈仍在进行。

2. （票据的）转让，流通[U]
3. 【口】顺利的通过，成功的越过[U]
   Negotiation of the single-plank bridge was difficult for me.

   要走过这座独木桥对我是件难事。