- to post (the same message) to two or more message boards or electronic mailing lists at the same time.
- a message posted to two or more message boards or electronic mailing lists at the same time: Cross-posts are often greeted with hostility.
Examples from the Web for cross-post
Historical Examples of cross-post
This was, in effect, to establish a cross-post at a time when cross-posts did not exist.
On the bye and cross-post letters the postage for the year 1719 had amounted to 4000.
From Liverpool and Manchester the cross-post service to almost every part of the kingdom was at the same time improved.
From the bye and cross-post letters the postmasters-general had received, at the highest, 4000 a year.
The postmasters were strictly enjoined to stamp the bye and cross-post letters.