(infml 口) things that are considered useless or of little value 无用的或无价值的东西: all that junk in the boot of the car 汽车行李箱中的所有废旧杂物 * You read too much junk, ie low-quality books. 你看低水平的书看得太多了. 
old or unwanted things that are sold cheaply 廉价出售的废旧杂物: pick up some interesting junk 买些有趣的旧货 * [attrib 作定语] a junk shop 旧货店. 
(sl 俚) narcotic drug; heroin 麻醉药; 海洛因.# `junk food (infml derog 口, 贬) food (eg potato crisps) eaten as a snack and usu thought to be not good for one's health 通常认为不利健康的小吃（如炸马铃薯条）.