Word: keirins
Part of speech: Noun
Syllables: kei
rins
Definition: Plural of keirin. A form of track cycling originating in Japan, where riders must initially race behind a motorised pace-setter.
Morphemes:
Affix: keirin
Language: en
PoS: Noun
Meaning: A form of track cycling originating in Japan, where riders must initially race behind a motorised pace-setter.
Etymology Compounds: Affix: 競輪
Language: ja
Decoded: Jing Lun 
Meaning: racing cycles
Affix: -s
Language: en
PoS: Suffix
Meaning: Used to form many pluralia tantum (nouns that are almost or entirely without singular forms).