Meaning

• 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.

• A small nail with a head and a sharp point.

• A cylinder often of wood or metal used to fasten or as a bearing between two parts.

  "Pull the pin out of the grenade before throwing it at the enemy."

• The victory condition of holding the opponent's shoulders on the wrestling mat for a prescribed period of time.

• A slender object specially designed for use in a specific game or sport, such as skittles or bowling.

• (in plural) A leg.

  "I'm not so good on my pins these days."

• Any of the individual connecting elements of a multipole electrical connector.

  "The UK standard connector for domestic mains electricity has three pins."

• A piece of jewellery that is attached to clothing with a pin.

• 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.

• A scenario in which moving a lesser piece to escape from attack would expose a more valuable piece to attack.

• The flagstick: the flag-bearing pole which marks the location of a hole

• The spot at the exact centre of the house (the target area)

  "The shot landed right on the pin."

• A mood, a state of being.

• One of a row of pegs in the side of an ancient drinking cup to mark how much each person should drink.

• Caligo.

• A thing of small value; a trifle.

• A peg in musical instruments for increasing or relaxing the tension of the strings.

• A short shaft, sometimes forming a bolt, a part of which serves as a journal.

• The tenon of a dovetail joint.

• A size of brewery cask, equal to half a firkin, or eighth of a barrel.

• A pinball machine.

  "I spent most of my time in the arcade playing pins."

Meaning

• (often followed by a preposition such as "to" or "on") To fasten or attach (something) with a pin.

• (usually in the passive) To cause (a piece) to be in a pin.

• To pin down (someone).

• To enclose; to confine; to pen; to pound.

• To attach (an icon, application, etc.) to another item.

  "to pin a window to the Taskbar"

• To fix (an array in memory, a security certificate, etc.) so that it cannot be modified.

  "When marshaling data, the interop marshaler can copy or pin the data being marshaled."

• To cause an analog gauge to reach the stop pin at the high end of the range.