Word: koan
Part of speech: Noun
Syllables: ko
an
Definition: A story about a Zen master and his student, sometimes like a riddle, other times like a fable, which has become an object of Zen study, and which, when meditated upon, may unlock mechanisms in the Zen student’s mind leading to satori.
Morphemes:
Affix: koan
Language: en
PoS: Noun
Meaning: A story about a Zen master and his student, sometimes like a riddle, other times like a fable, which has become an object of Zen study, and which, when meditated upon, may unlock mechanisms in the Zen student’s mind leading to satori.
Etymology Compounds: Affix: 公案
Language: ja
Decoded: Gong An 
Meaning: kōan