paperweight / (computing slang, figuratively) brick (an electronic device, especially a heavy box-shaped one, that has become non-functional or obsolete)

anvil

biker gang, outlaw motorcycle club; group of hot-rodders

薄羽蜉蝣, 薄翅蜉蝣: an antlion

cyanocobalamin

A provisional accounting auditor appointed by the Board of Auditors if the accounting auditor of a joint-stock company is deficient due to resignation, death, disqualification, etc. The term of office is until the next general meeting of shareholders.

man, male adult person

a woman, a female adult person

two persons / a couple, pair / (poetic) the two of us, we two

a foreigner, a person from a foreign country; an alien, a foreign national / a person who is not Japanese