IPA: /ˈlʌntʃbɒks/
KK: /ˈlʌntʃbɑks/
A container used to carry food, especially meals eaten at midday.
She packed her sandwich and fruit in her lunchbox for school.
Lunchbox → The word is formed from "lunch" (originating from the 19th century, possibly derived from the word "luncheon", which refers to a light meal) and "box" (from Old English "box", meaning a container). A lunchbox is a container used to carry a light meal, typically eaten during the day.
Think of a 'light meal' ('lunch') being carried in a 'container' ('box') — that's what a lunchbox is for.
No commonly confused words.