| BI | a tooth having two cusps or points |
|---|---|
| BI | having two cusps or points (especially a molar tooth) |
| BI | valve with two cusps |
| BI | having two cusps or points (especially a molar tooth) |
| BI | a cycle that has two wheels |
| BI | ride a bicycle |
| BI | a chain that transmits the power from the pedals to the rear wheel of a bicycle |
| BI | a clip worn around a cyclist's ankles that keeps trousers from becoming caught in the bicycle chain |
| BI | a small pump that fills bicycle tires with air |
| BI | a race between people riding bicycles |
| BI | a rack for parking bicycles |
| BI | a seat for the rider of a bicycle |