pin

noun

1. A needle without an eye (usually) made of drawn-out steel wire with one end sharpened and the other flattened or rounded into a head, used for fastening.
2. A small nail with a head and a sharp point.
3. A cylindrical piece of solid material, often of wood or metal, used to fasten or as a bearing between two parts.
4. The victory condition of holding the opponent's shoulders on the wrestling mat for a prescribed period of time.
5. A slender object specially designed for use in a specific game or sport, such as skittles or bowling.
6. A leg.
7. Any of the individual connecting elements of a multipole electrical connector.
8. A piece of jewellery that is attached to clothing with a pin.
9. A simple accessory that can be attached to clothing with a pin or fastener, often round and bearing a design, logo or message, and used for decoration, identification or to show political affiliation, etc.
10. Either a scenario in which moving a lesser piece to escape from attack would expose a more valuable piece to being taken instead, or one where moving a piece is impossible as it would place the king in check.
11. The flagstick: the flag-bearing pole which marks the location of a hole
12. The spot at the exact centre of the house (the target area)
13. The spot at the exact centre of the target, originally a literal pin that fastened the target in place.
14. A mood, a state of being.
15. One of a row of pegs in the side of an ancient drinking cup to mark how much each person should drink.
16. Caligo.
17. A thing of small value; a trifle.
18. A peg in musical instruments for increasing or relaxing the tension of the strings.
19. A short shaft, sometimes forming a bolt, a part of which serves as a journal.
20. The tenon of a dovetail joint.