When you don't know a word/ can't remember what it's called, describe it!
You can say something about;
- the size/colour (sun: it is very big/hot/yellow)
- what it is used for/who uses it (shopping bag: you use it to put your groceries in)
- where you can find it (beamer: we use it in the classroom to watch videos)
- compare it to something else (disgust: the feeling when you have to eat something you really don't like)