originally an apple from the tree of knowledge of good and evil in the Garden of Eden; it is now used to refer to anything that is tempting but dangerous (as sexuality)
merriment expressed by a brightness or gleam or animation of countenance; "he had a sparkle in his eye"; "there's a perpetual twinkle in his eyes"
be lively or brilliant or exhibit virtuosity; "The musical performance sparkled"; "A scintillating conversation"; "his playing coruscated throughout the concert hall"
reflect brightly; "Unquarried marble sparkled on the hillside"