n. & v.
n. 1 discarded articles; rubbish. 2 anything regarded as of little value. 3 sl. a narcotic drug, esp. heroin. 4 old cables or ropes cut up for oakum etc. 5 Brit. a lump or chunk. 6 Naut. hard salt meat. 7 a lump of fibrous tissue in the sperm whale's head, containing spermaceti.
v.tr. discard as junk. junk food food with low nutritional value. junk mail unsolicited advertising matter sent by post. junk shop a shop selling cheap second-hand goods or antiques.
[ ME: orig. unkn. ]