shortened form of cockroach, 1837, on mistaken notion that it was a compound. In contemporary writing said to be from a polite desire to avoid the sexual connotation in the first syllable. Meaning "butt of a marijuana cigarette" is first recorded 1938, perhaps from resemblance to the insect, but perhaps a different word entirely.
roach (n.2)
small freshwater fish, c. 1200, from Old French roche (13c.), of uncertain origin, perhaps from a Germanic source. Applied to similar-looking fish in North America.
例文
1. He found his brother in a seedy， roach -infested apartment.
彼は自分の兄が古くて汚い、ゴキブリが暴れているアパートに住んでいることに気づいた。
2.The lake was restocked with roach last year.
昨年、この湖にはまたいくつかの擬鯉が放し飼いにされた。
3.Tom is never sick ; he is as sound as a roach .
トムは病気をしないで、牛のように丈夫だ。
4.Now I know where they got the idea for the Roach Motel.
今、彼らがゴキブリホテルからインスピレーションを受けたことを知っています。
5.How many kids in this world get sprayed with roach poison？