The Collaborative International Dictionary
Replum
Replum \Re"plum\ (r?"pl?m), n. [L., doorcase.] (Bot.)
The framework of some pods, as the cress, which remains after
the valves drop off.
--Gray.
Wiktionary
replum
n. (context botany English) The framework of some pods, such as the cress, which remains after the valves drop off.