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

1. Having two people riding on a motorcycle

Encyclopedia: Two-up

• amniotic
• amniotic cavity
• amniotic fluid
• amniotic sac
• amobarbital
• amobarbital sodium
• amoeba
• amoeban
• amoebiasis
• amoebic
• amoebic dysentery
• Amoebida
• Amoebina
• amoebiosis
• amoeboid
• amoebous
• amok
• amole
• Amon
• Amon-Ra
• among
• amongst
• Amontillado
• Amor
• amora