jack ladder jackknife-fish • jack lagging · · · Info · Definitions · Characters · · jack ladder · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) (nautical) a hanging ladder of ropes or chains supporting wooden or metal rungs or steps. Synonyms: Jacob's ladder, jack ladder, pilot ladder. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 j latin small letter j U+006A k latin small letter k U+006B l latin small letter l U+006C r latin small letter r U+0072