Word: koans
Part of speech: Noun
Syllables: koans
Definition: Plural of koan; a paradoxical anecdote or a riddle that has no solution; used in Zen Buddhism to show the inadequacy of logical reasoning
Morphemes:
Affix: koan
Language: en
PoS: Noun
Meaning: A riddle with no solution, used to provoke reflection on the inadequacy of logical reasoning, and to lead to enlightenment.
Etymology Compounds: Affix: 公案
Language: ja
Decoded: Gong An 
Meaning: kōan
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).