Short for 労働基準監督署 (Rōdō Kijun Kantokusho, “Labour Standards Inspection Office”).

one, 1 / the first in order, foremost / the beginning / the best / a kind of; one of something / (card games) an ace / unity / the bottom string of a shamisen or other Japanese musical instrument

sun / daytime, daylight / day

the daytime, during the day / a half day, half of a day

the eighth day of the month / eight days

the ninth day of the month / nine days

the seventh day of the month / seven days

everything

(colloquial) current boyfriend

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