Someone you know from one of your classes that you get along with, but arent really friends with. You would never hang out with them in public, but you dont mind talking to them in class and waving to them in the hallway when you see them. As shallow as this may sound, we all have at least one hallway friend.
Girl 1: Hey were going to the beach this weekend. Wanna come?

Girl 2: Fer sure.

Girl 1: You can invite your friend Jane if you want.

Girl 2: No way! I only know her because she was in my physics class. Shes just a hallway friend.
by wellokiguess March 28, 2010
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Someone you know who isn't really your friend, but who you say hello to when you see them pass by. This term usually defines someone who you don't really know that well or who you don't really hang out with, but is someone who you would greet in passing.
Person 1: "Kelly Smith. Do you know her?"
Person 2: "Sorta. She was more of a hallway hello friend"
by makalive45 June 3, 2009
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