Best definition
The bus stop you intend catching the bus from. You may walk past other bus stops where that same route goes by but for some reason you just prefer catching the bus from this particular stop, even if it means walking an extra mile
*Le me walking with a friend to catch the bus when all of a sudden…

Me: Okay…this is my walkstop

Friend: What do you mean by that?

Me: I mean this is as far as I am walking with you cause I intend catching the bus from here

Friend: What bus are you catching?

Me: Bus 14

Friend: Oh! But you would have waited at the other bus stop close to….

Me: Haha I just prefer this particular one, which makes it my walkstop