a dive in which the diver throws the feet forward to complete a full backward somersault and enters the water feet first and facing away from the diving board
a person who gains (gains an advantage or gains profits); "she was clearly the gainer in that exchange"
an ability to understand the meaning or importance of something (or the knowledge acquired as a result); "how you can do that is beyond my comprehension"; "he was famous for his comprehension of American literature"