regma

from The Century Dictionary.

• noun In botany, a capsule with two or more lobes and as many one-seeded, two-valved cells, which separate at maturity, splitting elastically from the persistent axis (carpophore), as in Euphorbia and Geranium. It is one form of schizocarp.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Bot.) A kind of dry fruit, consisting of three or more cells, each which at length breaks open at the inner angle.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun botany A kind of dry fruit, consisting of three or more cells, each of which eventually breaks open at the inner angle.