groundnutshell
nounUK /ˈɡraʊndnʌtʃɛl/
US /ˈɡraʊndnʌtʃɛl/
The hard outer cover of a peanut.
She cracked the groundnutshell to get the peanut inside.
OTHER MEANINGS
2. The dry outer casing of any groundnut plant's fruit.
The groundnutshells were scattered across the field after harvest.
3. A small, empty, or worthless thing.
His promise turned out to be a groundnutshell.
4. A protective covering that is hard to open.
The groundnutshell kept the seed safe from insects.