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

• haycock
• Haydn
• Hayek
• Hayes
• hayfield
• hayfork
• haying
• haying time
• hayloft
• Haym Salomon
• haymaker
• haymaking
• haymow
• hayrack
• hayrick
• hayride
• hayrig
• Hays
• hayseed
• haystack
• Hayti
• hayward
• haywire
• Haywood
• hazan