crosspost — English Dictionary

Noun

1. An electronic message posted to multiple newsgroups or forums simultaneously.

   Usage

   • Internet

2. An instance of crossposting, or the post thus created.

Verb

1. To post (a message) to multiple newsgroups or forums simultaneously.

   Usage

   • Internet
   • Transitive or intransitive

   Examples

   but it sounds like a rationalization to me. I'm cross-posting this to net.women to see how women feel about it.

2. To post an entry (in a book index or other index) such that no matter which word a user looks under, they will find the relevant entry (see examples).