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

everyone, one and all

a research student (i.e. a visiting or non-matriculating graduate student) / a researcher

researcher

a laboratory

researcher

research association; research society / group of enthusiasts (as may be found in schools, colleges, etc)

research & development; R&D

(education) research project, done by Japanese schoolchildren during summer break, to be presented upon return to school

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)