Definitions
1.NounMiscellaneous items of little value, especially discarded or unwanted items."This shed is full of junk – will you help me sort it out?; She needs to find a better place to keep her junk [= belongings]."
2.NounMaterial or resources of poor quality or low value, especially resources that lack commercial value."junk food; junk fish; junk trees"
3.NounNonsense; gibberish."The student put down junk for answers just to finish his homework more quickly."
4.NounAny narcotic drug, especially heroin.
5.NounThe genitalia, especially of a male.
6.NounSalt beef.
7.NounPieces of old cable or cordage, used for making gaskets, mats, swabs, etc., and when picked to pieces, forming oakum for filling the seams of ships.
8.NounA fragment of any solid substance; a thick piece; a chunk.
9.VerbTo throw away.
10.VerbTo find something for very little money (meaning derived from the term junkshop)"(On Facebook, a record collector wrote:) "The newest addition to my Annette Hanshaw collection, I junked this beautiful flawless E-copy within walking distance from my house.""
11.Verb(Can we verify this sense?) To consume junk food, mainly at a fast-food restaurant."Let's just junk some burgers at McDonald's.; Let me go junking to KFC with you."
12.NounA Chinese sailing vessel.