/troy"keuh/ , n.
1. a Russian carriage, wagon, or sleigh drawn by a team of three horses abreast.
2. a team of three horses driven abreast.
3. any group of three persons, nations, etc., acting equally in unison to exert influence, control, or the like.
[ 1835-45; tróika threesome, troika, deriv. of tróe three (collective), akin to tri THREE ]