1. A cigar-shaped log with rotary fins that measure the ship's speed
   - patent log, taffrail log

Derived forms: screw logs

Type of: log

• gros point
• Gros Ventre
• grosbeak
• groschen
• grosgrain
• gross
• gross anatomy
• gross domestic product
• gross estate
• gross margin
• gross national product
• gross out
• gross profit
• gross profit margin
• gross revenue
• gross sales
• gross ton
• grossbeak
• grossly
• grossness
• grossular
• Grossulariaceae
• grossularite
• grosz
• grot