2) extremely tempting and delicious; capable of being devoured ravenously and ecstatically, esp in a figurative sense
2) I await the challenge to find any part of your body that is not nomable, Lady Gaga.
-comes from the word "nom" (verb), the sound of eating especially yummy food.
Person 2: "Here have some nomables!"
Person 1: "Yay! Cookies! OMNOMNOM!"