lunchbox

noun

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