[modelling] Pinning is a technique used when assembling large or heavy model kits (such as metal wargaming miniatures) that involves drilling a hole in two pieces of the model to be joined, and using a `pin` to strengthen the bond when they are glued. Pinning is a useful technique for reinforcing joints and is essential when making models f... Found on http://en.wikipedia.org/wiki/Pinning_(modelling)
Small stone wedges used to prevent movement of structural stone used in pitching, drains, revetments etc..
Found on http://www.encyclo.co.uk/local/20717
noun a mutual promise of a couple not to date anyone else; on college campuses it was once signaled by the giving of a fraternity pin Found on https://www.encyclo.co.uk/local/20974