(colloquial) current boyfriend

(slang) Alternative form of 彼氏 (kareshi, “boyfriend”)

everyone, one and all

to try to save a little only to lose a lot; to spoil the ship for a ha'p'orth of tar; to be penny wise and pound foolish

fondue pot

match (device to make fire)

Kyūjitai form of 火薬

(Buddhism) a fiery chariot that brings sinners to hell; by extension, a form of torture using this vehicle / a burning fire in the shape of a wheel / Short for 火車婆 (kasha-baba): a powerful, evil old hag

boiler / furnace

(Internet slang) Firefox (web browser)