They illuminate imaginative leaps not initially displayed

• Christmastime adornments
• Lungs of sheep, pigs etc used as food
• Matches
• Cigarette option
• Simple introduction to solutions to be found in a grid
• Settles

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"the lungs," c.1200, literally "the light (in weight) organs," from light (adj.1); also see lung . Obsolete now except in phrases like to knock (someone's) lights out .

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
lights \lights\ (l[imac]ts), n. pl. [So called from their lightness.] The lungs of an animal or bird; -- sometimes coarsely applied to the lungs of a human being.

Wikipedia Word definitions in Wikipedia
__NOTOC__ Lights are the lungs of game or livestock as used in cooking and butchery . Although technically offal , lights are rarely used in English-speaking culinary traditions, with the exception of the Scottish national dish haggis . In Malaysia , slices ...