Domino definition

dŏmə-nō
A country expected to react politically to events as predicted by the domino theory.
noun
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(person) (born Antoine Domino, Jr.) 1928-2017; U.S. rock-and-roll pianist & composer.
proper name
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A small rectangular wood or plastic block, the face of which is divided into halves, each half being blank or marked by dots resembling those on dice.
noun
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A game played with a set of these small blocks, generally 28 in number.
noun
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One wearing this costume.
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A costume consisting of a hooded robe worn with an eye mask at a masquerade.
noun
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The mask so worn.
noun
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(games) A tile divided into two squares, each having 0 to 6 dots or pips (as in dice), used in the game of dominoes.
noun
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(politics) A country that is expected to react to events in a neighboring country, according to the domino effect.
noun
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A masquerade costume consisting of a hooded robe and a mask covering the upper part of the face.
noun
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The mask itself.
noun
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The person wearing the costume.
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(geometry) A polyomino made up of two squares.
noun
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(intransitive) To collapse in the manner of dominoes.
verb
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To cause to collapse in the manner of dominoes.
verb
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Other Word Forms

Noun

Singular:
domino
Plural:
dominoes

Origin of domino

  • French probably from Latin (benedīcāmus) dominō (let us praise) the Lord dative of dominus lord dem- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • French probably from domino mask, perhaps because of the resemblance between the eyeholes and the spots on some of the tiles domino2

    From American Heritage Dictionary of the English Language, 5th Edition

  • Borrowing from French domino (1801), from Medieval Latin domino, from Latin dominus (“lord, master”); compare Medieval Latin dominicale (“a kind of veil”). The game is said to be so called from the black under surface or part of the pieces with which it is played.

    From Wiktionary