an action in which you make a flat object such as a coin go upwards and turn over in the air [= toss]:
In the end the decision was made by the flip of a coin.
a movement in which you jump up and turn over in the air, so that your feet go over your head [= somersault]:
I tripped and almost did a backward flip down the stairs.
an action in which you turn the pages of a book or newspaper quickly, especially because you are looking for something [= flick]
I had a quick flip through my cookery books and found a recipe that sounded quite nice.