dam, dike, dyke
['flagpole, flagstaff', 'breastplate, aegis, egis', 'chain mail, ring mail, mail, chain armor, chain armour, ring armor, ring armour', 'water snake', 'hippopotamus, hippo, river horse, Hippopotamus amphibius', 'plow, plough', 'cinema, movie theater, movie theatre, movie house, picture palace']