crock (Noun) — A black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink.
crock (Noun) — Nonsense; foolish talk. ex. "that's a crock"
crock (Noun) — An earthen jar (made of baked clay).
crock (Noun) — (informal) something or someone old and decrepit, esp. an infirm old person.
crock (Verb) — Release colour when rubbed, of badly dyed fabric.
crock (Verb) — Soil with or as with crock.