Cincinnati poker is a variant game wherein each player receives four hole cards, and four cards are dealt facedown as community cards. After the players ante and get their cards, there's a round of betting.
Each community card is turned over one at a time, after which there's another opportunity to bet. After all the cards are revealed and the betting is done, players form their best five-card hands using any number of down cards and community cards. A popular version of Cincinnati uses five hole cards and five community cards rather than four.