mushifuda; stripped hanafuda deck of 40 cards
A hanafuda deck with the November and December suits removed, used in certain games. The term is domain-specific to hanafuda players.
See also: 花札
Mushifuda is a type of hanafuda deck with the November and December cards removed.
Compound of 虫 (mushi, 'insect') and 札 (fuda, 'card'). The origin of the 'insect' association is uncertain; it may refer to the reduced, 'stripped' nature of the deck.