overhead projector

device that projects a transparent image

en-GB/ˌəʊvəˈhɛd pɹəˈd͡ʒɛktə/
en-US/ˈoʊvɚˈhɛd pɹəˈd͡ʒɛktɚ/

ক্যাটাগরি:

projector