Lunchbox

noun

1. A container for transporting meals, especially lunch.
2. A person or object constantly at one's side (in the manner of a lunchbox).
3. (British slang) The male genitals when enclosed in clothing.
4. A lunch packaged in a disposable box to be taken away to eat.
5. A luggable; an early laptop computer, usually a unit with a handle and a fold-out keyboard.