棚からぼた餅 たなからぼたもち Also written 棚から牡丹餅 Meanings Expression, Noun sudden windfall; unexpected piece of good luck (literally: azuki-covered mochi (fallen) from a shelf) See also: ぼた餅 (ぼたもち). Kanji 棚 shelf. Read as たな. 餅 mochi. Read as もち. Word lists Idioms Jinuma: Japanese Dictionary · Word lists