to work for free, to work without pay or other compensation / to work in vain, to work with no favorable end result

(archaic, grammar) any word that declines or conjugates / (archaic, grammar) more specifically, a verb

everything

(colloquial) current boyfriend

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

everyone, one and all

the Chūgoku region (western part of Honshu comprising the prefectures of Okayama, Hiroshima, Yamaguchi, Tottori, and Shimane)

the northeast region of Japan, specifically the northernmost six prefectures in Honshu (clockwise from the northermost): 青森県 (Aomori-ken), 岩手県 (Iwate-ken), 宮城県 (Miyagi-ken), 福島県 (Fukushima-ken), 山形県 (Yamagata-ken), 秋田県 (Akita-ken).

(historiography) Chinese local chronicle

Setouchi Region: Region of Japan's inland sea (the body of water separating Honshū, Shikoku, and Kyūshū, three of the four main islands of Japan) and coastal areas roundabout