Demon core, a spherical subcritical mass of plutonium manufactured during World War II by the United States as a fissile core for an early atomic bomb

(onomatopoeia) sound of coughing, hack hack

gurgly.

A gurgling sound.

ご馳走様でした: it was delicious (a stock phrase required by the Japanese etiquette, lit.: it was a feast)

it was delicious

Blagoveshchensk (a city in Russia)

(dated) milk / breast (of a woman, of a female mammal)

earth; ground

intellect / knowledge / wisdom