grassed

someone had grassed on the thieves.

有人向发了这些小偷。

Tom grassed his opponent with a well-placed blow. Bill must have grassed on us.

比尔肯定把我们出卖了。

the railtracks were mostly grassed over .

铁轨上多半长满了草。

I don't think he has any friends since he grassed to the Feds.

他向邦调查局过密，所以我想他没有任何朋友。