
n., pl., -noes, or -nos.
- 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.
- dominoes or dominos (used with a sing. or pl. verb) A game played with a set of these small blocks, generally 28 in number.
- A country expected to react politically to events as predicted by the domino theory: "The dominos did indeed fall in Indochina" (Arthur M. Schlesinger, Jr.).
[French, probably from domino, mask, perhaps because of the resemblance between the eyeholes and the spots on some of the tiles. See domino2.]
dom·i·no2 (dŏm'ə-nō')

n., pl., -noes, or -nos.
- A costume consisting of a hooded robe worn with an eye mask at a masquerade.
- The mask so worn.
- One wearing this costume.
[French, probably from Latin (benedīcāmus) dominō, (let us praise) the Lord, dative of dominus, lord.]









