Adjective
duck arsed (comparative more duck arsed, superlative most duck arsed)
Alternative spelling of duck-arsed
(slang, chiefly Britain, indelicate, sometimes insulting, vulgar) Having or pertaining to broad hips and large, bulging buttocks.
(chiefly Britain, informal) Having or pertaining to a hairstyle of the type called a duck's arse.
Source: en.wiktionary.orgduck-arsed