When fibers on a velvet-like surface, such as upholstery lay in a different direction from most other fibers. This would apply as well to carpet, suede, etc. Example: I could tell where he sat by the hing marks on the sofa. OR I had just carefully vacuumed the carpet to make it hing free when the kids ran through the room.
HING
Meaning of HING in English
Slang English vocab. Английский сленговый словарь. 2012