十八日

じゅうはちにち

eighteenth day of the month

二十八日

にじゅうはちにち

twenty-eighth day of the month

八十日目

やっとかめ

a long time (since the last time), it's been a while (since I last saw, mailed, etc., you)

八八

two eights

八八花

はちはちばな

standard hanafuda pattern (orig. used to play hachi-hachi)

八

はち や

eight; eighth

八十八夜

はちじゅうはちや

eighty-eighth day from the beginning of spring

八百八町

はっぴゃくやちょう

the whole enormous extent of Edo, from one side of Edo to the other

八百八寺

はっぴゃくやでら

the large number of temples in Kyoto

八百八橋

はっぴゃくやばし

the large number of bridges over canals and rivers in Naniwa (present-day Osaka)

八重八重

やえやえ

multilayered

八十八箇所

はちじゅうはっかしょ

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

八十日間世界一周

はちじゅうにちかんせかいいっしゅう

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

日日

ひにち ひび

the number of days, date

三八

さんぱち

three and eight

八虐

はちぎゃく

the eight unpardonable crimes in ancient Japanese law

八福

はちふく

the Beatitudes

八丁

はっちょう

skillfulness

八端

はったん

twilled fabric