Screen Door
noun
A net door is a screen door. Makes sense, right? Screen doors are like little meshy nets made into a door shape.
You learned the kun'yomi for 網 when you learned it as a vocabulary word. Take that reading, add the 戸 reading with rendaku, and you have yourself あみど.
あの古い網戸は本当に気持ち悪いね。
That old screen door is so gross!