Card Tables are a table for playing cards (such as in a Casino)http://www.thefreedictionary.com/card+tables. They originated in the late 17th century and were then circular in design.
A definition for a card table is "A table at which card games are played, esp. a small, square table with folding legs". - Source: Your Dictionary http://www.yourdictionary.com/card-table
Card Tables are also called folding tableshttp://www.foldingcardtableandchairs.com/card-tables-target.html, game tables or specifically Poker tables, card tables can range from an inexpensive, no-frills metal and plastic design to a more elaborate and distinct design that accommodates more advanced game settings or perhaps more elegant social events.
As Card tables tend to be a table with four legs, they offer tremendous versatility and can be used for multiple purposes around the house (e.g. dining, arts/craft and others). Card tables got the name by becoming a popular style of table for playing card games on. Card games like poker, gin rummy, whist, bridge, etc are all popularly played on card tables.
Poker Tables
Card tables actually used for games of poker or other similar card games are usually large enough to accommodate four or more players and incorporate chip trays, graphics that enhance game play, and even spill-proof surfaces.
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Image of a Card Table