junkie

n (sl 俚) drug addict, esp one addicted to heroin 有毒瘾者; （尤指）有海洛因瘾者.

jump-start, jumped-up, jumper, jumpily, jumpiness, jumpy, Jun, junction, junction box, juncture, June, jungle, jungle fever, jungly, junior, junior high school, juniper, junk, junk food, junket, Junoesque, junta, Jupiter, juridical, jurisdiction, jurisprudence, jurist, juror, jury, jury-box, juryman, just, just about, just as, just now, just the same, just then, just yet, justice, Justice of the Peace (abbr 缩写 JP),