Appears to be Pachysandra.
As to whether it is a weed or not...depends on who you ask. Some people love it and treasure it. Others pay lots of money to get rid of it.
As for the poison ivy, if you are not opposed to using something like brush killer, you can carefully paint the poison ivy hoping to eradicate it without harming the Pachysandra. Good luck.
Edited to add photo.
This is the product I used to get rid of poison ivy.