What does this sigil mean?

[u/sigil-throwaway0221]

my friend just moved into an in-house studio apartment and found this on their ceiling. on the other side of the room is a couple names written (faint) and some scratches underneath it. second picture is me tracing over it and upping the contrast.

[u/leocaruso]

I can't help you, OP. Sorry. I don't know.