Dominos
Dominos is a plural form of the word domino and refers to game pieces making up a domino set, deck, or pack, or to games played with these pieces. In the area of mathematical tilings and polyominoes the word domino often refers to any rectangle formed from joining two squares edge to edge. Standard domino sets consist of 28 pieces called bones, cards, tiles, stones, spinners or dominoes. The correct plural term for dominos is dominoes.