jackscrew jacksaw • jackshaft · · · Info · Definitions · Synonyms · Characters · · jackscrew · · Text Latin · · Script 9 · · Length Definitions · · · (noun) screw-operated jack. Synonyms: screw jack. · · Noun Definition 1 Synonyms · · · screw jack · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 j latin small letter j U+006A k latin small letter k U+006B r latin small letter r U+0072 s latin small letter s U+0073 w latin small letter w U+0077