junk
— Noun
– English
~ any of various Chinese boats with a high poop and lugsails
junk DNA
— Noun
– English
~ stretches of DNA that do not code for genes; "most of the genome consists of junk DNA"
junk bond
— Noun
– English
~ a (speculative) bond with a credit rating of BB or lower; issued for leveraged buyouts and other takeovers by companies with questionable credit
junk food
— Noun
– English
~ food that tastes good but is high in calories having little nutritional value
junk heap
— Noun
– English
~ an accumulation of refuse and discarded matter
junk
— Noun
– English
~ the remains of something that has been destroyed or broken up