noun
flower-bedecked vehicle; flower float
Refers to a vehicle decorated with flowers, often seen in parades or festivals. The term is straightforward and literal.
祭りで花自動車が通りをパレードした。
A flower-bedecked vehicle paraded through the streets at the festival.
Compound of 花 (flower) and 自動車 (automobile). The exact origin is uncertain; it likely arose as a descriptive term for decorated vehicles in parades.