Plausibly 대구재 (daegujae) + -이 (-i). Compare 대가리 (daegari). <span class="searchmatch">대구재이</span> • (daegujaei) (Hwanghae, derogatory) the head 대구재 (daegujae, “head”) (Hwanghae dialectal...
ongjin'gun yeonpyeongmyeon]: 얘야 대구재 좀 깍아라 yae-ya daegujae jom kkaga-ra Hey, shave his head. <span class="searchmatch">대구재이</span> (daegujaei, “head”) (Hwanghae dialectal, derogatory)...