1. job assignments or positions, especially in different locations
Usage: often military or diplomatic
2. messages or content published online, especially on social media or forums
Usage: internet context
3. notices or announcements displayed publicly

Examples

• The diplomat received several overseas postings during her career.
• His military postings took him to three different countries.
• The company announced new postings for managers in Asia.
• She checked her social media postings from last week.
• The forum had hundreds of new postings overnight.
• Job postings were displayed on the bulletin board.
• The university removed outdated postings from the notice board.