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

Derived forms: patent logs

Type of: log

• big-name
• big-shouldered
• big-ticket
• big-tree plum
• bigamist
• bigamous
• bigamy
• bigarade
• bigeminal
• bigeneric
• bigeye
• bigeye scad
• Bigfoot
• bigger
• biggie
• biggin
• biggish
• bighead
• bigheaded
• bighearted
• bigheartedness
• bighorn
• Bighorn River
• bighorn sheep
• bight