well, i was walking around town, and the church looked inviting, so i went abuilding and soon i was clinging to  the steeple
like parkour, abuilding takes place in an urban setting on man-made objects, especially buildings
"well, i was walking around town, and the church looked inviting, so i went abuilding and soon i was clinging to  the steeple" What is the definition of "abuilding"?