A 21 pin connector commonly used on video equipment in Europe. Contains pins for RGB video, composite video in / out, stereo sound in / out, and mode switching information. Some of the pins are dual purpose, and can be used for S-Video if the socket is configured that way.

Aka Peritel and Euro-Connector

Pinout for a SCART socket:

     20                2
   \ I I I I I I I I I I |

      19                1

 1      AOR     Audio Out Right
 2      AIR     Audio In Right
 3      AOL     Audio Out Left + Mono
 4      AGND    Audio Ground
 5      B GND   RGB Blue Ground
 6      AIL     Audio In Left + Mono
 7      B       RGB Blue In
 8      SWTCH   Audio/RGB switch / 16:9
 9      G GND   RGB Green Ground
 10     CLKOUT  Data 2: Clockpulse Out (Unavailable ??)
 11     G       RGB Green In
 12     DATA    Data 1: Data Out (Unavailable ??)
 13     R GND   RGB Red Ground
 14     DATAGND Data Ground
 15     R       RGB Red In / Chrominance
 16     BLNK    Blanking Signal  (This pin is a bastard ;)
 17     VGND    Composite Video Ground
 18     BLNKGND Blanking Signal Ground
 19     VOUT    Composite Video Out
 20     VIN     Composite Video In / Luminance
 21     SHIELD  Ground/Shield (Chassis)

Borrowed from the hardware book c/o Game Station X (http://www.gamesx.com)

To SCART a games console is to perform an RGB mod on it, resulting in a lead attached to the console, terminating in a SCART connector. (Just in case you ever come across a strange document explaining how to SCART a PlayStation)

Courtesy of jasstrong: SCART stands for "Syndicat Commerciale d'Appareil Radio et Télévision". See jasstrong's write-up for SECAM for an explanation of how SCART came about (nothing to do with Teletext after all).

On the other hand, there's probably a very good explanation as to why SCART is ubiquitous in Europe, but unheard of in America, and I'm sure Teletext has something to do with it. ;)

There's also SCART-J, as used on televisions in Japan, which uses a totally different pin out.