noun Miscellaneous items of little value, especially discarded or unwanted items.
This shed is full of junk – will you help me sort it out?
noun Material or resources of poor quality or low value, especially resources that lack commercial value.
junk food
noun Nonsense; gibberish.
The student put down junk for answers just to finish his homework more quickly.
noun Any narcotic drug, especially heroin.
noun The genitalia, especially of a male.
noun Salt beef.
noun Pieces 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.
noun A fragment of any solid substance; a thick piece; a chunk.