Definitionen
1.NounA container for transporting meals, especially lunch.
2.NounThe penis when enclosed in clothing.
3.NounA lunch packaged in a disposable box to be taken away to eat."Jack was carrying his lunchbox with him."
4.NounA luggable; an early laptop computer, usually a unit with a handle and a fold-out keyboard.
5.NounA simple portable transmitter sometimes used in phreaking.
6.NounA cocktail made with beer, orange juice, and almond liqueur.
7.NounA person seen as weak and disposable who could easily be sacrificed without much guilt or afterthought. (Can we add an example for this sense?)