noun. In Roman antiquity, a chariot or car drawn by two horses abreast.

noun. A two-horse chariot.

noun. A Roman racing chariot drawn by two horses abreast.

"A biga is a preferment, a mixture of flour, liquid, and yeast that is allowed extra time to ferment slowly -- long and slow being key elements in the making of good bread -- to build flavor that it will then pass on to the bread when it is mixed into the dough."