from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun botany A
pouchlike structure of a plant that encloses the seeds.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the vessel that contains the seeds of a plant (not the seeds themselves)
Sorry, no etymologies found.
The Datura metal seedcase says yes, it has been mentioned before and we should have been prepared.