A generic cupboard or cabinet; 吊り戸棚 is a type of 戸棚 that is hung on the wall.
Etymology
Compound of 吊り (hanging, from verb 吊る) + 戸棚 (cupboard). The spelling 釣り戸棚 is a common ateji-like substitution, as 釣る means 'to fish' and is not etymologically correct here.