junk

(noun) the remains of something that has been destroyed or broken up. Synonyms: debris, dust, rubble, detritus.

(noun) any of various Chinese boats with a high poop and lugsails.

(verb) dispose of (something useless or old). Synonyms: trash, scrap. Examples: "Trash these old chairs." "Junk an old car." "Scrap your old computer."