 Both "kozolec" and "kozuc" are probably diminutive forms of "kozel" 'goat', referring to a branching structure used for holding and drying hay or grain (cf.the similarly motivated German "Sägebock" and U.S. English "sawbuck").The word "stog" also refers to a haystack and is derived from Common Slavic "stogъ" 'stack, heap'.