Word: rucksacs
Part of speech: Noun
Syllables: ruck
sacs
Definition: Plural of rucksac; dated form of rucksack.
Morphemes:
Affix: rucksac
Language: en
PoS: Noun
Meaning: dated form of rucksack; a bag carried by a strap on your back or shoulder
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).