It is something which has penetrated our defences and is now making us uncomfortable. Splinters may represent painful words or ideas. YVc may be holding on to ideas which cause negative feelings.
2- To be part of a splinter group in a dream suggests feeling sufficiently strongly about something to break away from mainstream thought.
To hit something which splinters is to rccognisc that we are all composed of parts which make a whole.
3- The sense of belonging to a group of like-minded people can only come after we have recognised our isolation or, in some cases, fragmentation. [1]
If while you are visiting you stick a splinter in your foot, you will soon make, or receive, a visit which will prove extremely unpleasant. Your affairs will go slightly wrong through your continued neglect. [2]
(In the Bible, one often sees a splinter in the eye of a neighbor, but not in one’s own.) [7]