Word: knapsacks
Part of speech: Noun
Syllables: knap
sacks
Definition: Plural of knapsack; a bag carried by a strap on your back or shoulder
Morphemes:
Affix: knapsack
Language: en
PoS: Noun
Meaning: A case of canvas or leather, for carrying items on the back.
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).