screw log screw key • screw machine · · · Info · Definitions · Synonyms · Characters · · screw log · · Text Common · · Latin · · Scripts 9 · · Length 2 · · Syllables Definitions · · · (noun) a cigar-shaped log with rotary fins that measure the ship's speed. Synonyms: patent log, screw log, taffrail log. · · Noun Definition 1 Synonyms · · · patent log · · Synonym 1 taffrail log · · Synonym 2 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 l latin small letter l U+006C o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 w latin small letter w U+0077