Rm843 lionmail lindenwood

It seems like you're providing a list of words or phrases. Here's a breakdown of each:

1. rm843: This appears to be a room number or a code.
2. lionmail: This could be a username or an email address, possibly related to a university or organization.
3. lindenwood: This might be a reference to Lindenwood University, a private university in Missouri, USA.

If you'd like to provide more context or information about what these words or phrases represent, I'd be happy to help you explore their meaning or significance!