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.
权威例句
1. He found his brother in a seedy, roach-infested apartment.
他发现自己的哥哥住在一套破旧肮脏、蟑螂肆虐的公寓里。
2. The lake was restocked with roach last year.
去年,这个湖里又放养了一些拟鲤。
3. Tom is never sick; he is as sound as a roach.
汤姆从不生病, 身体壮如牛.
4. Now I know where they got the idea for the Roach Motel.
现在我知道他们是从蟑螂旅馆得到的灵感.
5. How many kids in this world get sprayed with roach poison?