1. a fast motorboat designed for high-speed travel on water

Examples

• The speedboat raced across the lake at 60 miles per hour.
• We rented a speedboat for our vacation on the coast.
• The rescue team used a speedboat to reach the stranded swimmers.
• His new speedboat has twin engines and sleek design.
• The speedboat left a long wake behind it as it sped away.
• Police patrol boats chased the suspect’s speedboat through the harbor.