What is the vegetarian diet....?

"A vegetarian diet is one that excludes meat, fat, legumes and fish. Vegetarians also aim to avoid eating battery hen eggs and any slaughter house by-products."That was some article that i've read... Some peoples incorrectly call themselves vegetarians just because they avoid eat meat only occasionally - a recent survey of 9,000 "vegetarian" women in England revealed that only half of the group surveyed never ate meat or fish.Some that not suitable we call them innocent just because they were call Vegetarian.