kabufuda
Small, rigid Japanese playing cards, a single deck consisting of 40 cards with values ranging from 1 to 10, used for playing hand-comparing betting games such as oicho-kabu.
uncountable
Nowhere do these cards survive in more interesting form than in Japan, where, as Mekuri-fuda or Kabu-fuda, they are used for gambling games.
Where it comes from
From Japanese 株(かぶ)札(ふだ) (kabufuda), a compound of カブ (kabu, “the 9 card in kabufuda”) + 札 (fuda, “card”). The former is borrowed from Portuguese cabo (“end”, for being the highest non-face card).
Adapted from the Wiktionary entry kabufuda (CC BY-SA 4.0).