A side dish served with a main meal; prepared dishes sold at supermarkets or delis (side dishes for ordinary meals).
スーパーの惣菜売り場で唐揚げを買って帰った。
I bought fried chicken from the supermarket's prepared food section and brought it home.
忙しい日は惣菜で夕食を済ませることが多い。
On busy days I often have dinner with prepared side dishes.
母は毎日、惣菜を少しずつ作って常備している。
My mother makes small portions of side dishes every day and keeps them on hand.