Domino

Noun

 * 1)  A tile divided into two squares, each having 0 to 6 dots or pips (as in dice), used in the game of dominoes.
 * 2)  A country that is expected to react to events in a neighboring country, according to the domino effect
 * 3) A masquerade costume consisting of a hooded robe and a mask covering the upper part of the face.
 * 4) The mask itself.
 * 5) The person wearing the costume.
 * 6)  A polyomino made up of two squares.

Synonyms

 * 2-omino

Derived terms

 * domino effect
 * dominoes
 * polyomino
 * triomino

Related terms

 * dominate