hollowcell
nounUK /ˈhɒləʊsɛl/
US /ˈhɑːloʊsɛl/
A hollowcell is a tiny empty room inside something, like a little cave with nothing in it.
The scientist looked through the microscope and saw a hollowcell in the leaf.
OTHER MEANINGS
2. A small empty compartment in a honeycomb or similar structure.
Bees left a hollowcell at the edge of the honeycomb.
3. A fictional tiny pod used for storing things in science stories.
The hero hid the map inside a hollowcell on his belt.
4. A gap or bubble inside a solid material.
The glass had a hollowcell that made it look cloudy.