cack

 
Pronunciation: /kak/
British informal

noun

[mass noun]
  • excrement; dung: cow cack
  • rubbish: they talk such a load of cack

verb

[with object]
  • defecate in (one’s clothes).

Origin:

Old English (as cac- in cachūs 'privy'); the verb dates from late Middle English and is related to Middle Dutch cacken; based on Latin cacare 'defecate'