two-up

Etymology
From.

Noun

 * 1)  A game of chance, played by betting on the outcome of two pennies thrown in the air.

Synonyms

 * , swy, swy-up

Translations

 * Maori: tūapu

Adjective

 * 1)  Having two document pages per printed page.

Adverb

 * 1)  With two people aboard.
 * Some of us rode two-up as we travelled in convoy to the beach.