1. small rectangular tiles marked with dots, used in various games
Usage: plural of domino
2. games played with these tiles
Usage: can be singular or plural in meaning

Examples

• The children played with a set of colorful dominoes.
• She arranged the dominoes in a long line to knock them down.
• We spent the evening playing dominoes at the kitchen table.
• The dominoes fell one after another in a chain reaction.
• He collected the dominoes and put them back in the box.
• Dominoes is a popular game in many countries.
• The dominoes were made of ivory and felt smooth to the touch.