Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun taffrail_log

1 sense of taffrail log

Sense 1
patent log, screw log, taffrail log -- (a cigar-shaped log with rotary fins that measure the ship's speed)
       => log -- (measuring instrument that consists of a float that trails from a ship by a knotted line in order to measure the ship's speed through the water)