Subwoofer

src: pisces.bbystatic.com A subwoofer (or sub ) is a woofer, or a complete loudspeaker, which is dedicated to the reproduction of low-pitch...

Olympic-size swimming pool

src: mymice.me An Olympic-size swimming pool is the type of swimming pool used in the Olympic Games, where the race course is 50 metres (16...

Hamburger

src: upload.wikimedia.org A hamburger , beefburger or burger is a sandwich consisting of one or more cooked patties of ground meat, usuall...