oakum oaktongue • oakweb · · · Info · Definitions · Characters · · oakum · · Text Latin · · Script 5 · · Length Definitions · · · (noun) loose hemp or jute fiber obtained by unravelling old ropes; when impregnated with tar it was used to caulk seams and pack joints in wooden ships. · · Noun Definition 1 Characters · · a latin small letter a U+0061 k latin small letter k U+006B m latin small letter m U+006D o latin small letter o U+006F u latin small letter u U+0075