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

• biologistic
• biology
• biology department
• biology lab
• biology laboratory
• bioluminescence
• bioluminescent
• biomass
• biome
• biomechanics
• biomedical
• biomedical cloning
• biomedical science
• biomedicine
• biometric
• biometric authentication
• biometric identification
• biometrics
• biometry
• bionic
• bionic man
• bionic woman
• bionics
• bionomic
• bionomical