noun
two wheels; two flowers
Literally 'two wheels' or 'two flowers'. The meaning depends on context: 二輪車 (two-wheeled vehicle) or 二輪の花 (two flowers).
二輪車は駐輪場に止めてください。
Please park two-wheeled vehicles in the bicycle parking area.
花瓶に二輪のバラが生けてある。
Two roses are arranged in the vase.