Definition of "crud"

(uncountable) Dirt, filth or refuse.  quotations  examples

(uncountable, figuratively, by extension) Something of poor quality.  examples

(countable) A contemptible person.  examples

Mixed impurities, especially wear and corrosion products in nuclear reactor coolant.  examples

(uncountable, skiing, snowboarding) A heavy wet snow on which it is difficult to travel.  examples

(uncountable, euphemistic) Feces; excrement.  examples

(uncountable, slang, US, military and students) Venereal disease, or (by extension) any disease.

(uncountable) A fast-paced game, loosely based on billiards or pool, with many players participating at the same time.  examples

(Western Pennsylvania) Cottage cheese.  examples

(transitive) To clog with dirt or debris.  quotations  examples

Non-vulgar interjection expressing annoyance, anxiety, etc.; sugar, damn.  examples