Lunch-box meaning : A container for transporting meals, especially lunch. A person or object constantly at one's side (in the manner of a lunchbox). (British slang) The male genitals when enclosed in clothing. A lunch packaged in a disposable box to be taken away to eat. A luggable; an early laptop computer, usually a unit with a handle and a fold-out keyboard. A simple portable transmitter sometimes used in phreaking. A cocktail made with beer, orange juice, and almond liqueur.