mom jeans
noun [ plural ] uk/ˈmɒm ˌdʒiːnz/ us/ˈmɑːm ˌdʒiːnz/
US informal disapproving（不好看、不入流的）妈妈牛仔裤
jeans in a style that is thought to be unfashionable and not attractive
(UK also mum jeans, /ˈmʌm ˌdʒiːnz/ /ˈmʌm ˌdʒiːnz/)高腰牛仔裤
a style of jeans with a high waist