A thumb tack (North American English) or push pin is a short nail or pin used to fasten items to a wall or board for display and intended to be inserted by hand, generally without the assistance of tools. A variety of names are used to refer to different designs intended for various purpose. Thumb tack and push pin are both sometimes compounded (thumbtack or pushpin) or hyphenated (thumb-tack or push-pin). Thumb tacks made of brass, tin or iron may be referred to as brass tacks, brass pins, tin tacks or iron tacks, respectively. These terms are particularly used in the idiomatic expression to come (or get) down to brass (or otherwise) tacks, meaning to consider basic facts of a situation.Drawing pin or drawing-pin refers to thumb tacks used to hold drawings on drawing boards. Map pin or map tack refers to thumb tacks used to mark locations on a map and to hold the map in place.
Edwin Moore invented the "push-pin" in 1900 and founded the Moore Push-Pin Company. Moore described the push-pin as a pin with a handle. Later, in 1904, in Lychen, German clockmaker Johann Kirsten invented flat-headed thumb tacks for use with drawings.
Push-pin was an English child's game played from the 16th until the 19th centuries. It is also known as "put-pin", and it is similar to Scottish games called "Hattie" and "Pop the Bonnet". In philosophy it has been used as an example of a relatively worthless form of amusement.
In push-pin each player sets one pin (needle) on a table and then tries to push his pin across his opponent's pin. The game is played by two or more players.
In "Pop the Bonnet", or "hattie", players place two pins on the brim of a hat. They take turns tapping or "popping" on the sides of the hat trying to cause pins to cross one another. Whichever player causes them to cross takes the pins. This was a form of gambling, where a player could win or lose their pins, which were valuable as a rare imported commodity at that time.
Boys and men might stash several pins on a sleeve or lapel to be prepared to play.
Push-pin was immortalized by Jeremy Bentham when he wrote in The Rationale of Reward that "Prejudice apart, the game of push-pin is of equal value with the arts and sciences of music and poetry."John Stuart Mill, who disagreed with Bentham on this point, misquotes Bentham as saying, "Push-pin is as good as poetry." Mill's version is now widely attributed to Bentham.
A push pin is a short nail or pin with a large, slightly rounded head made of metal.
Push pin may also refer to: