2countableAn egg carton; A specialized container for eggs which has multiple indentations for holding individual eggs.
3countable, lightingA device for restricting the spread of light that fits into the softbox of a diffuser panel.
4(countable, education) A self-contained class that has no collaboration or interaction with any other class, and which is the sole responsibility of a single teacher.
5countable, uncountableA foampad with multiple indentations giving it a texture similar to that of an egg carton.
6countableA surface or insert that has regularly spaced holes or indentations.
7A grid-like support structure or scaffolding.
8countableA style of open roof that consists of horizontal supports in a grid pattern.