十

(one's) 80s; eighties

Astronomy

Southern Cross (asterism formed with the brightest four stars of the constellation Crux)

Mathematics

regular dodecahedron

swastika (in its clockwise form, esp. as a Nazi symbol)

Mathematics

regular icosahedron

Work of art, literature, music, etc. name

Thirty-six Views of Mount Fuji (woodblock prints by Katsushika Hokusai)

Organization name

Red Cross Hospital (91 hospitals in Japan)

28 mansions of Chinese astronomy (constellations dividing the ecliptic into 28 positions)

Red Cross (Society)

twelve signs of the zodiac

winter wren (Troglodytes troglodytes)

Formal or literary term

an old woman's gray hair

Organization name

Japanese Red Cross Society; JRC

Organization name

International Committee of the Red Cross

radish (Raphanus sativus var. sativus)

cross in a circle

Seventeen-Article Constitution (of Asuka-period Japan)

many-fold

88 temples (of, or modeled after those of, Shikoku)

eighty-eighth day from the beginning of spring

Japanese tit (Parus minor); Oriental tit

first system to rank officials into 12 levels (603 CE)

Rosicrucian; Fellowship of the Rosy Cross

Work of art, literature, music, etc. name

Around the World in Eighty Days (1873 novel by Jules Verne)