This article is about the playing card. For alternate uses of the word see Ace . For abbreviations with the same spelling, see ACE. ]] The word "ace" comes from the Old French word 'as' (from Latin 'as') meaning 'a unit', from the name of a small Roman coin. It originally meant the side of a die with only one mark, before it was a term for a playing card. Since this was the lowest roll of the die, it traditionally meant 'bad luck' in Middle English, but as the ace is often the highest playing card, its meaning has changed to mean 'high-quality, excellence'. An ace is a playing card. In the standard deck, an ace has a single suit symbol (a heart, diamond, spade, or club) located in the middle of the card, sometimes large and decorated, especially in the case of the Ace of Spades, which also often bears the name or emblem of the deck's printer. In most card games, aces have the highest value of al