knapsack knappishly • knapsacked · · · Info · Definitions · Synonyms · Characters · · knapsack · · Text Latin · · Script 8 · · Length Definitions · · · (noun) a bag carried by a strap on your back or shoulder. Synonyms: backpack, back pack, packsack, rucksack, haversack. · · Noun Definition 1 Synonyms · · · backpack · · Synonym 1 back pack · · Synonym 2 packsack · · Synonym 3 rucksack · · Synonym 4 haversack · · Synonym 5 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 k latin small letter k U+006B n latin small letter n U+006E p latin small letter p U+0070 s latin small letter s U+0073