ecballium

from The Century Dictionary.

• noun A genus of cucurbitaceous plants, closely allied to Momordica.

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

• noun (Bot.) A genus of cucurbitaceous plants consisting of the single species Ecballium agreste (or Elaterium), the squirting cucumber. Its fruit, when ripe, bursts and violently ejects its seeds, together with a mucilaginous juice, from which elaterium, a powerful cathartic medicine, is prepared.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun exploding cucumber; squirting cucumber